投稿時間:2022-05-04 05:27:25 RSSフィード2022-05-04 05:00 分まとめ(27件)

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海外TECH	MakeUseOf	How to Cast Content on Your Mac to a Roku: 4 Methods	https://www.makeuseof.com/how-to-cast-mac-to-roku/	handy	2022-05-03 19:45:14
海外TECH	MakeUseOf	How to Fix a High CPU Usage From the Windows Widgets	https://www.makeuseof.com/windows-widgets-high-cpu-fix/	usage	2022-05-03 19:15:15
海外TECH	MakeUseOf	Are Custodial Crypto Wallets a Security Risk?	https://www.makeuseof.com/custodial-crypto-wallets-security-risk/	wallet	2022-05-03 19:15:14
海外TECH	DEV Community	How to save time by NOT learning IDE shortcuts	https://dev.to/nikitakoselev/how-to-save-time-by-not-learning-ide-shortcuts-251k	How to save time by NOT learning IDE shortcutsMany devs don´t like using mouse too much as it is slow Luckily modern IDEs provide us with hundreds of shortcuts which shall theoretically save us some time Unfortunately sometimes in practice we spend more time memorizing shortcuts than actually use these very shortcuts Let me use my favourite Java IDE IntelliJ Idea as an example It has numerous default shortcuts and your can also add your own ones Just look at this list Somehow I learned those which I need for my work How Easy I have found the most important shortcut in the IntelliJ Ctrl shift AThis shortcut is called find action It allows us to quickly look up any shortcut by typing in few words from description The key idea is to use this shortcut every time you need to do a repetitive action for which you feel a shortcut must exist This advice is easier to follow as it only takes second so our lasiness is not under a direct threat For example you want to add a new line below the current line and move your cursor to the beginning of the new line ctrl shift A new line read the shortcut shift enterDo not try to memorize the shortcuts just look them up when you need them The way human psychology works after N number of usages you will naturally memorize the shortcut Even if your IDE doesn´t have such a shortcut you can use same PDF file and quickly look it up However in this case it will require considerably more time Let´s say it takes only seconds It does not look much but I think such small delays actually are the ones which stop us from getting more productive with the tools we already have Good luck improving the quality of your adventure with an IDE of your choice	2022-05-03 19:53:11
海外TECH	DEV Community	Behind the scenes: From Pressing the power button to Getting to the Login Screen	https://dev.to/kcdchennai/behind-the-scenes-from-pressing-the-power-button-to-getting-to-the-login-screen-6em	Behind the scenes From Pressing the power button to Getting to the Login Screen IntroductionEver wondered how your modern PC get to the Login screen with a mere press of a button Are you curious of what happens behind the scenes of bootup or do you want to get called up by your friends when they face an error while booting up their PC If yes you re at the right place Boot up is not just a short hand for Powering on a PC it s actually a long and vital process It s involves an extensive list of things that takes place to get a fully functional session of an operating system In this blog we ll look upon the entire boot process from BIOS to Bootloader Pressing the Power buttonWhen you press the Power button the Power supply in the CPU cabinet supplies the power to it s units like Hard disks motherboard and SSDs to name a few Once all the units gets power CPU looks for a program called BIOS or UEFI in modern systems BIOS UEFI and Performing POSTBIOS stands for Basic Input and Output System Even though it hasn t evolved much it has certainly changed it s residence many time from CMOS SRAM to NOR flash It resided in CMOS SRAM in it early days but as SRAM was volatile it s contents got flushed after turning OFF the computer BIOS then took it s place in PROM non erasable UV ROM erasable by UV rays and finally ended up in flash memory backed up by a CMOS battery BIOS performs POST Power on self test wherein it sends a signal to all devices and check s if they re up and running If there s some error it beeps and shows an error The number of times it beeps signals the type of error For example if there s a RAM failure in a certain Dell laptop it will beep times signaling the error You can know more about beep codes and corresponding errors here Now once the BIOS is done testing the hardware it hands over the control to the Operating system s bootloader Stage Bootloader Primary Bootloader BIOS looks for the Operating System to boot and load for which it has to select a Boot Device This can be HDD SSD USB CD or DVD drive For MBR partitioning system we have the bootloader in the first sector of the hard disk called MBR Sector MBR sector is bytes long and has primarily partitions byte for Primary Bootloader byte for Partition Table tables of bytes each byte for Magic Number Validation of MBR The main task of byte long primary bootloader also referred to as the stage bootloader is to find the secondary bootloader It finds it by looking through the partition table Stage bootloader Secondary bootloader Now once the Stage bootloader is loaded it actually loads the operating system It does this by loading the kernel and optional initial RAM disk initramfs The kernel starts the init system systemd mostly which starts other services leading all the way to login screen For Linux we have GRUB bootloader Windows uses Windows Boot Manager and Macs use boot efi UEFI GPT based systems use something called EFI executable which doesn t have to be present in the first sector of the disk All these processes hardly take a few seconds The evolution in the tech world has made the computer boot up process lightning fast	2022-05-03 19:40:51
海外TECH	DEV Community	Variables and Data-Types in "C"	https://dev.to/ankit_sahu1504/variables-and-data-types-in-c-49m4	Variables and Data Types in quot C quot VariablesAs a human beings we store information in our brains as the same as computers store information in the memory as a form of block So there are so many blocks available in the memory In every block we can store some data which we can also call value data is a piece of information that can be moved processed or stored by a computer Every block has its unique memory location Now here comes the variable part variables are the name of the memory location which stores some data i e With the help of variables we access data from different memory locations so every block has its name which we say variable For making a variable there are some set of rules you should follow if you don t follow it properly then the compiler throws an error to your program Variables are case sensitive For example the variable age and AGE is different in the c language because the c language is a case sensitive language hence compiler will treat it differently The st character should be or alphabet There should be no comma or blank space between the name of the variable There should not be any other symbol than Variable name should be meaningful It enhances program readability Data typeA data type tells the program how to interpret a data value in memory Every variable name has its data type so before initializing a variable we have to give a data type There are majorly types of data types we are using in c Int it stores integer type of data It usually takes bytes of memory Float it stores numeric values with floating decimal points It usually takes bytes of memory Char it stores character type of data a z It usually takes byte of memory Double it also stores numeric values with floating decimal points It usually takes bytes of memory Note The basic difference between float and double is thatFloat has decimal digits of precision while double has decimal digits of precision Now we have seen data types and variables hence with the help of data types the following syntax is used for initializing a variable in c Syntax int age float price char name xyz Note We are here initializing and declaring the variable in the same line but we can also initialize in a line and declare in another line example int age age We can also change the variable value int age age age	2022-05-03 19:24:51
海外TECH	DEV Community	Python Cheat Sheet Part - 3	https://dev.to/sandeepk27/python-cheat-sheet-part-3-2mjg	Python Cheat Sheet Part DictionariesThe dictionary is an unordered set of comma separated key value pairs within with the requirement that within a dictionary no two keys can be the same Dictionary lt dictionary name gt lt key gt value lt key gt value Adding Element to a dictionaryBy this method one can add new elements to the dictionary lt dictionary gt lt key gt lt value gt Updating Element in a dictionaryIf a specified key already exists then its value will get updated lt dictionary gt lt key gt lt value gt Deleting an element from a dictionarydel keyword is used to delete a specified key value pair from the dictionary as follows del lt dictionary gt lt key gt Dictionary Functions amp MethodsBelow are some of the methods of dictionarieslen methodIt returns the length of the dictionary i e the count of elements key value pairs in the dictionarylen dictionary clear methodRemoves all the elements from the dictionarydictionary clear get method Returns the value of the specified keydictionary get keyname items methodReturns a list containing a tuple for each key value pairdictionary items keys methodReturns a list containing the dictionary s keysdictionary keys values methodReturns a list of all the values in the dictionarydictionary values update methodUpdates the dictionary with the specified key value pairsdictionary update iterable Conditional StatementsThe if elif and else statements are the conditional statements in Python and these implement selection constructs decision constructs if Statementif conditional expression statementsif else Statementif conditional expression statementselse statementsif elif Statementif conditional expression statementselif conditional expression statementselse statementsNested if else Statementif conditional expression if conditional expression statements else statementselse statementsLoops in PythonA loop or iteration statement repeatedly executes a statement known as the loop body until the controlling expression is false For LoopThe for loop of Python is designed to process the items of any sequence such as a list or a string one by one for lt variable gt in lt sequence gt statements to repeatWhile LoopA while loop is a conditional loop that will repeat the instructions within itself as long as a conditional remains true while lt logical expression gt loop bodyBreak StatementThe break statement enables a program to skip over a part of the code A break statement terminates the very loop it lies within for lt var gt in lt sequence gt statement if lt condition gt break statementstatement after loopContinue StatementThe continue statement skips the rest of the loop statements and causes the next iteration to occur for lt var gt in lt sequence gt statement if lt condition gt continue statement statement statementFunctionsA function is a block of code that performs a specific task You can pass parameters into a function It helps us to make our code more organized and manageable Function Definitiondef my function parameters pass statementsPython cheat sheet part Python cheat sheet part Top Websites to learn PythonHow to install python in windows Best IDE s for Python	2022-05-03 19:22:29
海外TECH	DEV Community	Avoiding storage access in functions - 2	https://dev.to/rushanksavant/avoiding-storage-access-in-functions-2-4f7l	Avoiding storage access in functions This post is in continuation from the last one which was on saving gas by referencing data from memory Now we will see a case where this can be contradictory Consider the following contracts contract varReferencing uint public arr uint public arrLength function addItem uint item external arrLength arrLength updating state arr push item adding element for uint i i lt arrLength i arr i arrLength i updating state contract varReferencing uint public arr uint public arrLength function addItem uint item external uint arrLength arrLength storing into memory arr push item adding element uint memory arr arr storing into memory for uint i i lt arrLength i arr i arrLength i arr arr updating state arrLength arrLength updating state contract varReferencing uint public arr uint public arrLength function addItem uint item external uint arrLength arrLength storing into memory arr push item adding element for uint i i lt arrLength i arr i arrLength i arrLength arrLength updating state All the three contracts have the exact same functionality to push new element to the array and sum the index of all the elements with new array length and update it in array Note this functions have no use in practical these are just examples Lets see the differences and the gas spent for each contract varReferencing addItem increases the state variable arrLength by pushes new element item to state variable array arr and updates each array element with new length index varReferencing addItem increases the copy of state variable arrLength by pushes new element item to state variable array arr and makes it s copy in memory Then these copies are used to perform further operations and then assigned to original state variables varReferencing addItem makes copy of arrLength state variable in memory but not of the arr And rest of the operations are same ConclusionvarReferencing was expected to be most gas efficient because it makes copies of both state variables but it turned out to be most expensive This was probably due to copying arr from storage to memory and then back to storage after all the operations In varReferencing we just made copy or arrLength and that turned out to be the most gas efficient method	2022-05-03 19:19:39
海外TECH	DEV Community	Learning Clojure, part V	https://dev.to/cazevedo/learning-clojure-part-v-2bl3	Learning Clojure part VIn the previous part we learnt what are forms how Clojure evaluates them into values and how to return code as data Now we gonna learn about a fundamental underlying data structure behind all of it the list The meaning of being LISPThe name LISP derives from LISt Processor and the reason for it is because everything in the language is in fact a list What we call as a list is in fact the Linked List data structure that is represented in Clojure and all other historically LISPs as values between parenthesis separated by a space This is a list As we can see the forms that compose the language syntax are a linked list with a function as the first element that is applied in all the remaining elements from the list Image Forms as linked lists made by the author is copyleft material under unlicense This linked list is formed with pairs of elements e g that usually are called cons In most LISPs implementations cons are a structure of a pair of elements A B in Clojure the underlying structure are Seqs that we ll see later but the language has some syntax tricks so we call it cons as well and that s what we ll use for now We can create lists as creating cons cells where each one receives the value of the element as A and the next cell as B in A B cons This cons is cons a cons list returns gt This is a list As we can see the last element of each list is a nil cell that represents the end of the list and it s ignored when we print all elements since it s just an empty value Creating lists of valuesSince forms are part of the structure of the language we cannot just create a list of values in code mode since Clojure evaluates every list as a form If we try to simply enter our list on REPL we ll get an error This is a list returns gt Execution error ClassCastException at user eval REPL gt class java lang String cannot be cast to class clojure lang IFn java lang String is in module java base of loader bootstrap clojure lang IFn is in unnamed module of loader bootstrap Most times you see errors about clojure lang IFn is because something related to functions in this case is because This can t be read as a function since Clojure expects it to be an operator that will be applied to the remaining elements For we create lists we need to quote them so they will be treated as data This is a list returns gt This is a list As Clojure is a dynamic language lists can hold any given value PI π returns gt PI π In this case we created a list that contains a float a string and a char Getting values from a listThe main thing we have to know about lists is that when we want to get a value from it we have to access all values before it Imagine we have the following list Brock Misty Lt Surge Erika If we want to access Lt Surge that is the third element first we have to access the two elements before it Brock and Misty This happens since it s a linked list and we don t have a direct reference to the position of each value as the close element is to the end of the list longer will be the time needed to get its value To get elements we usually have three functions that we combine to go through the list first second last and rest firstThe first function returns the element at the beginning of the list first Brock Misty Lt Surge Erika returns gt Brock secondThe second function returns the second element of the list second Brock Misty Lt Surge Erika returns gt Misty lastThe last function returns the element at the end of the list last Brock Misty Lt Surge Erika returns gt Erika restThe rest functions return the list without the first element rest Brock Misty Lt Surge Erika returns gt Misty Lt Surge Erika Getting specific valuesMost times when we iterate over lists we combine some of these functions to reach the desired element let s imagine that we want to get the third element first rest rest Brock Misty Lt Surge Erika returns gt Lt Surge When we iterate over lists we usually use recursion that s something we gonna see later and help us not have to write a lot of functions to get our data but for now is important that you know how to use and combine them Adding valuesThere are two main functions that we use to add things to a list The first is the cons function that as we see before is used to build lists and the second is conj which is used to create a new list adding an arbitrary number of elements to the beginning of an existing one conj Koga Sabrina Blaine Giovanni Erika Lt Surge Misty Brock returns gt Brock Misty Lt Surge Erika Koga Sabrina Blaine Giovanni When we use cons on other hand we build a new list with the passed exact one element on the beginning of it cons Brock Misty Lt Surge Erika returns gt Brock Misty Lt Surge Erika That s allNow you re becoming to understand LISP a little more in the next parts we ll continue exploring some of the fundamental data structures that we can use to build our programs and how to use them to structure our data	2022-05-03 19:11:15
Apple	AppleInsider - Frontpage News	AT&T plans first price hike in years for older single-line, family plans	https://appleinsider.com/articles/22/05/03/att-plans-first-price-hike-in-years-for-older-single-line-family-plans?utm_medium=rss	AT amp T plans first price hike in years for older single line family plansAT amp T is set to raise prices on some of its older mobile service plans to combat rising inflation squeeze more revenue from existing customers and encourage subscribers to switch to unlimited plans AT amp T logo on a buildingIt will be the first increase on the affected plans in three years Bloomberg has reported The monthly fees will rise by up to a month for single line customers and up to a month for those on family plans Read more	2022-05-03 19:17:21
Apple	AppleInsider - Frontpage News	OWC Gemini review: External storage and a few more ports for your Mac	https://appleinsider.com/articles/22/05/03/owc-gemini-review-external-storage-and-a-few-more-ports-for-your-mac?utm_medium=rss	OWC Gemini review External storage and a few more ports for your MacThe OWC Gemini is a dock that offers not only grants a few more port options for your Thunderbolt equipped Mac but also local storage There are a few problems that we hear about as it pertains to Apple s modern Mac lineup More connectivity options than Apple offers has historically been one which is solvable with a dock or a hub The other frequent complaint issue is storage The main solution to this is external enclosures either networked or available locally For folks that need both the OWC Gemini may be a decent package to help with both problems at the same time Read more	2022-05-03 19:54:24
海外TECH	Engadget	Blizzard gives sneak peek of new mobile game ‘Warcraft Arclight Rumble’	https://www.engadget.com/blizzard-announces-mobile-game-warcraft-arclight-rumble-trailer-194933852.html?src=rss	Blizzard gives sneak peek of new mobile game Warcraft Arclight Rumble Warcraft fans can look forward to a new mobile game in Blizzard today released the trailer for Warcraft Arclight Rumble a free to play single player strategy game that is due later this year The game features collectible Warcraft nbsp Minis that players will be able to control in order to defeat evil leaders in the Warcraft universe The game s Google Play store description states that players will have the choice of building armies with five playable families Alliance Horde Beast Undead and Blackrock Players can opt for single player mode or going head to head in PvP battles Arclight Rumble will feature multiple modes including Conquest Dungeons Raids and Co Op The game features over Warcraft Minis and characters in total with the ability to unlock new skills and upgrade the characters as you level up The game s website features even more details on the upcoming title including the option to pre register for more details including the release date which hasn t been announced yet With Activision s ongoing workplace sexual harassment lawsuits aside it s been a mixed couple of years for the Warcraft universe As PC Gamer notes the Shadowlands expansion had problems that left some devoted WoW fans in a tizzy Last month s trailer on the Dragonlandsexpansion let down some fans too But a new mobile game offers up a fresh opportunity for fans to get excited about Warcraft again with relatively low stakes You can watch the trailer for Arclight Rumble below	2022-05-03 19:49:33
海外TECH	Engadget	Apple Store workers in Atlanta will hold union vote in June	https://www.engadget.com/apple-store-cumberland-mall-atlanta-union-vote-june-2-191702340.html?src=rss	Apple Store workers in Atlanta will hold union vote in JuneWorkers at the first US Apple Store to file for a union election will decide whether to unionize next month According to an agreement obtained by The Verge employees at Apple s Cumberland Mall retail location in Atlanta will begin voting on June nd with the ballot box open until June th All approximately regular full and part time staff at the store will be able to participate in the election Citing “a source familiar with the situation The Verge reports Apple wanted the vote held in July That was a move the Communications Workers of America CWA the union that seeks to represent the employees at the Cumberland Mall location reportedly opposed on account the later date would have afforded Apple more time to attempt to dissuade workers from unionizing We ve reached out to Apple for comment Apple hasn t explicitly come out against its frontline workers organizing but those involved in the union drive at the company s Grand Central Terminal location in New York have accused Apple of employing “union busting tactics including messaging that has tried to convince employees that unionization isn t in their best interests “We are fortunate to have incredible retail team members and we deeply value everything they bring to Apple the company said when news of the Grand Central Terminal drive first broke “We are pleased to offer very strong compensation and benefits for full time and part time employees including health care tuition reimbursement new parental leave paid family leave annual stock grants and many other benefits Among other concessions workers at the Cumberland Mall location hope to push Apple to compensate them better offer more opportunities for career advancement and build a safer workplace quot One of the biggest things that we re fighting for is going to be for fair pay and a livable wage because with Atlanta being such a huge city it s just getting more and more expensive to live here quot Elli Daniels an employee at the store told Engadget quot Everybody deserves the opportunity to be able to not worry about whether they can afford food or pay their bills Everybody deserves to be able to afford to live in the city that they work in quot Like the recent vote at Amazon s JFK warehouse in Staten Island the Cumberland Mall election could have historic ramifications If workers vote in favor of organizing with the CWA it would become the first unionized Apple Store in the US That s an outcome that could inspire Apple workers at other retail locations nbsp	2022-05-03 19:17:02
海外科学	NYT > Science	Wild Fox Kills 25 Flamingos and a Duck at the National Zoo	https://www.nytimes.com/2022/05/03/us/flamingo-fox-national-zoo.html	birds	2022-05-03 19:37:39
海外科学	NYT > Science	Colorado River Reservoirs Are So Low, Government Will Delay Releases	https://www.nytimes.com/2022/05/03/climate/lake-powell-mead-water-drought.html	Colorado River Reservoirs Are So Low Government Will Delay ReleasesThe decision will keep more water in Lake Powell on the Arizona Utah border instead of releasing it downstream to Lake Mead Both reservoirs are at their lowest points	2022-05-03 19:07:33
ビジネス	ダイヤモンド・オンライン - 新着記事	パルコとマルイ、増収基調でも「コロナ減収」からの回復は程遠い理由 - コロナで明暗！【月次版】業界天気図	https://diamond.jp/articles/-/302635	前年同期	2022-05-04 04:50:00
ビジネス	ダイヤモンド・オンライン - 新着記事	【クイズ】源義経に由来する「四字熟語」とは？頼朝・義経兄弟の確執 - Editors' Picks	https://diamond.jp/articles/-/302585	四字熟語	2022-05-04 04:45:00
ビジネス	ダイヤモンド・オンライン - 新着記事	親の最晩年の「お金・介護・墓」、連休に親子で話し合いたい大事な話 - 山崎元のマルチスコープ	https://diamond.jp/articles/-/302584	連休	2022-05-04 04:40:00
ビジネス	ダイヤモンド・オンライン - 新着記事	ソロキャンプ芸人・ヒロシが、YouTube再生回数を稼ぐ定番手法をやらない理由 - ヒロシのソロキャンプ入門	https://diamond.jp/articles/-/302612	道具	2022-05-04 04:39:00
ビジネス	ダイヤモンド・オンライン - 新着記事	西松屋がガラガラな店でも最高益を更新できた理由、クラウゼヴィッツ『戦争論』で解説 - ニュース3面鏡	https://diamond.jp/articles/-/302546	西松屋がガラガラな店でも最高益を更新できた理由、クラウゼヴィッツ『戦争論』で解説ニュース面鏡さまざまな“想定外を経験させられているコロナ禍。	2022-05-04 04:35:00
ビジネス	ダイヤモンド・オンライン - 新着記事	役所のDXはなぜ難しい？行政にはびこる「絶対間違えられない」の呪縛 - 酒井真弓のDX最前線	https://diamond.jp/articles/-/302583		2022-05-04 04:30:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「人体」は口や腸は細菌だらけなのに「腹腔内は無菌」。超納得の理由とは？ - すばらしい人体	https://diamond.jp/articles/-/302235	超納得の理由とはすばらしい人体累計万部突破唾液はどこから出ているのか、目の動きをコントロールする不思議な力、人が死ぬ最大の要因、おならはなにでできているか、「深部感覚」はすごい…。	2022-05-04 04:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	逃げ場失う投資家、急ピッチで進む株と債券の同時安 - WSJ発	https://diamond.jp/articles/-/302808	急ピッチ	2022-05-04 04:17:00
ビジネス	ダイヤモンド・オンライン - 新着記事	【マンガ】1万人を接客した美容部員が教える「アイメイクがあか抜ける」コツ - メイクがなんとなく変なので友達の美容部員にコツを全部聞いてみた	https://diamond.jp/articles/-/302396	【マンガ】万人を接客した美容部員が教える「アイメイクがあか抜ける」コツメイクがなんとなく変なので友達の美容部員にコツを全部聞いてみた「気づけば年以上メイクを変えていない…」「SNSで流れてくる素敵なメイクと何かが違う…」「でもデパートのコスメカウンターには行きづらい…」メイクに違和感を抱えつつ、つい時間がない日々に追われ「今日はまあこれでいいか」とやり過ごしているー『メイクがなんとなく変なので友達の美容部員にコツを全部聞いてみた』の著者で、マンガ家の吉川景都さんもそうした一人でした。	2022-05-04 04:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	カレー風味で食欲をそそる！ ネバネバ食材の長寿サラダとは？ - 認知症専門医が毎日食べている長寿サラダ	https://diamond.jp/articles/-/301837	カレー風味で食欲をそそるネバネバ食材の長寿サラダとは認知症専門医が毎日食べている長寿サラダ世界最先端の革命的認知症治療に取り組む、認知症研究年超の医学博士。	2022-05-04 04:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	成功する人は「全勝」を目指さない！ その納得の理由 - サイコロジー・オブ・マネー	https://diamond.jp/articles/-/302216	納得	2022-05-04 04:05:00
ビジネス	東洋経済オンライン	撮り鉄が荒れない､東武鉄道｢SL戦略｣演出の妙技 毎日運行して混雑を回避､他社の手本になる？ | 特急･観光列車 | 東洋経済オンライン	https://toyokeizai.net/articles/-/585726?utm_source=rss&utm_medium=http&utm_campaign=link_back	東武鉄道	2022-05-04 04:30:00