投稿時間:2023-05-14 06:21:45 RSSフィード2023-05-14 06:00 分まとめ(30件)

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IT	InfoQ	GitHub Overhauls Code Search Using New Search Engine	https://www.infoq.com/news/2023/05/GitHub-new-search-released/?utm_campaign=infoq_content&utm_source=infoq&utm_medium=feed&utm_term=global	GitHub Overhauls Code Search Using New Search EngineGitHub has introduced its new code search feature including a redesigned search interface a new code view and a search engine rebuilt from scratch to be faster more capable and to better understand code says GitHub software engineer Colin Merkel By Sergio De Simone	2023-05-13 20:00:00
海外TECH	DEV Community	📡 Type Casting in JavaScript	https://dev.to/catherineisonline/type-casting-in-javascript-10la	Type Casting in JavaScriptTypecasting in JavaScript is the conversion of one data type into another data type for example a number to a string Typecasting is often also known as type conversion What is data type JavaScript has main data types StringNumberBooleanNullUndefinedBigintSymbolObjectThe object can be divided into more data types or to be more precise there are data types that are also objects ArrayObjectDateJavaScript is a dynamic language with dynamic data types because variable types are defined the moment they are assigned the value Check out my post to learn more about data types if you don t have prior knowledge There are two types of typecasting   implicit typecasting and explicit typecasting The implicit typecastingThe implicit type conversion takes place automatically by the interpreter or the compiler when there is an internal requirement for that To understand what I mean exactly let s go through several examples The implicit typecasting of strings with plus to stringsWhen you try to add any data type to a string JavaScript will convert anything to a string A string plus anything else even if not a string will be converted to a string automatically Note that this works like this only with a plus because any other math operation will return a NaN Not a Number The implicit typecasting of numeric strings to numbersWhen you have a numeric value in a string but you perform a math operation specifically subtraction multiplication or division with another numeric value the numeric string will be converted to a number Note that this does not work with a plus Also both values can be a string with a numeric value as well and as a result you will still receive a number If there are any other types with such math operations rather than a number or a numeric string there are some other behaviors that we will go through shortly The implicit typecasting of booleans to numbersIf you use booleans in math operations with numbers then true is always converted to and false is always converted to Note that if it s a numeric string a number in the string then plus will convert the boolean to a string but anything else will convert the numeric string into a number Number  boolean Numeric string  boolean A number   boolean Numeric string   boolean Number boolean Numeric string boolean Number  boolean Numeric string  boolean The implicit typecasting of null to numbersWhen used with numbers null is converted to whether it s a plus minus division or multiplication The implicit typecasting of undefinedPerforming operations with undefined always returns NaN whether it s a boolean number or null Although an undefined plus string will convert it to a string as we learned earlier Undefined with numbers Undefined with null Undefined with boolean The explicit typecastingOpposite to implicit typecasting explicit typecasting means data type conversion manually This can be achieved via various built in methods Built in methods are functions that already exist in JavaScript and you don t create them yourself The explicit typecasting to numberTo convert anything to a number you can use the method Number However the result will be various depending on the data type String to a number Numeric string to a number Boolean true to a number Boolean false to a number Null to a number Undefined to a number Empty string to a number Date to a numberNote that the date itself is an object not a number and the output will be different for you because the new Date returns milliseconds elapsed since the start of in UTC which hopefully has changed ever since I wrote this code The explicit typecasting to stringTo convert anything to a string you can use a String method or toString Mostly we use toString but it might give a different result in some situations Number to a string Null to a string Undefined to a string NaN to a string Boolean true to a string Boolean false to a string Date to a number The explicit typecasting to booleanTo convert a data type to a boolean we can use the method Boolean This conversion can be divided into two parts to make it easier to remember First we will group those that return true and then we will group those that return true simple as that The explicit typecasting to falseThe data types that confer to false using the Boolean method are undefined null NaN an empty string without space The explicit typecasting to trueStrings numbers and strings that have space convert o true if we use the method Boolean Converting arrays to objectsThere are several ways to convert arrays to objects Let s go through each of them The spread operatorA spread operator is an easy way to spread an array inside the object A for loopAnother way to create an object from an array is to loop through an array and create a key with the array item index and add an array item at a relevant position to the value A forEach loopA very similar way will be looping through an array via forEach loop With the Object assign Next you can use an object built in method Object assign to merge an array with an object With the Object fromEntries Finally you can use another object method Object fromEntries However it will only work if you have a dimensional array otherwise it will throw an error Converting objects to arraysTo convert objects to arrays there are several built in methods that we can use Let s check them out With the Object entries We used a similar method to convert arrays to objects and we can do the same by using entries It will return a d array with arrays from each key value pair With the Object keys Next we can use a keys method that retrieves only the keys of the objects With the Object values Finally we can do the same but with the values of the object this time Type conversion vs Type coercionBoth type conversion and type coercion do sound and seem similar however they are different things When we say type coercion it always is an implicit typecasting If you remember implicit means that it s done automatically so to remember it easier consider coercion and implicit kind of synonyms because coercing means persuading someone to do something by threading or force So it does kind of associate with the implicit because it s done automatically by force Type conversion however refers to the general process of typecasting whether it s an implicit or explicit one SummaryTypecasting in JavaScript refers to the conversion of one data type to another data type such as a number to a string JavaScript has eight primary data types including string number boolean null undefined bigint symbol and object The object type can be further divided into additional data types such as array object and date JavaScript is a dynamic language with dynamic data types because variable types are defined when they are assigned a value Typecasting in JavaScript can be done explicitly or implicitly Implicit typecasting is automatic when the interpreter or compiler requires it Explicit typecasting is performed manually using built in methods The Number method is used to convert anything to a number and the String or toString method is used to convert anything to a string The Boolean method is used to convert a data type to a boolean In addition arrays can be converted to objects using the spread operator or a for loop	2023-05-13 19:35:18
Apple	AppleInsider - Frontpage News	Mudix HP11 MX2 video projector review: quick wireless streaming	https://appleinsider.com/articles/23/05/13/mudix-hp11-mx2-video-projector-review-quick-wireless-streaming?utm_medium=rss	Mudix HP MX video projector review quick wireless streamingThe Mudix HP MX video projector supports Wi Fi and AirPlay so you can quickly stream content from your Apple devices Review The Mudix HP MX video projector Read more	2023-05-13 19:55:15
海外TECH	Engadget	Meta fixed a Facebook bug that sent automatic friend requests to users	https://www.engadget.com/meta-fixed-a-facebook-bug-that-sent-automatic-friend-requests-to-users-194753983.html?src=rss	Meta fixed a Facebook bug that sent automatic friend requests to usersMeta has patched a Facebook bug that saw the social network send automatic friend requests when users would visit any profile In a statement the company shared with The Daily Beast on Friday Meta apologized for the glitch “We fixed a bug related to a recent app update that caused some Facebook friend requests to be sent mistakenly a Meta spokesperson told the outlet “We ve stopped this from happening and we apologize for any inconvenience this may have caused Fb is legit adding randoms if you click on their profile Got a screen record here facebook wtf Facebook glitch facebookaddpic twitter com SlxPhQUFーBavid Mcjavid bavidmcjavid May Predictably the glitch generated equal amounts of amusement and confusion Many quickly pointed out that the technical oversight temporarily made it impossible to “Facebook stalk other users More worryingly some found that Facebook sent friend requests to people they were trying to block Notably news of the bug comes after Meta said it would lay off employees Mark Zuckerberg s “Year of Efficiency will see the company reduce its workforce by at least by the end of This article originally appeared on Engadget at	2023-05-13 19:47:53
ニュース	BBC News - Home	Eurovision final: 10 things to look out for	https://www.bbc.co.uk/news/entertainment-arts-65569009?at_medium=RSS&at_campaign=KARANGA	guests	2023-05-13 19:25:45
ニュース	BBC News - Home	Israel and Gaza militants agree ceasefire - Palestinian sources	https://www.bbc.co.uk/news/world-middle-east-65585950?at_medium=RSS&at_campaign=KARANGA	ceasefire	2023-05-13 19:03:23
ニュース	BBC News - Home	Coronation photo shows King Charles with Prince William and Prince George	https://www.bbc.co.uk/news/uk-65575553?at_medium=RSS&at_campaign=KARANGA	photo	2023-05-13 19:23:28
ビジネス	ダイヤモンド・オンライン - 新着記事	“暇つぶし”にしか映らない？経営の神様・稲盛和夫が「大局観」を養った方法 - 「超一流」の流儀	https://diamond.jp/articles/-/322847	暇つぶし	2023-05-14 04:55:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「日銀が大株主」の企業ランキング【上位100社・完全版】年535億円もの国民財産流出の大問題【見逃し配信】 - 見逃し配信	https://diamond.jp/articles/-/322879	関連	2023-05-14 04:45:00
ビジネス	ダイヤモンド・オンライン - 新着記事	やせたいなら「歯磨き」が大事な理由、不十分だと太りやすい体質になることも - ニュースな本	https://diamond.jp/articles/-/322034	やせたいなら「歯磨き」が大事な理由、不十分だと太りやすい体質になることもニュースな本口の中の状態と体は、実は密接に関係しています。	2023-05-14 04:40:00
ビジネス	ダイヤモンド・オンライン - 新着記事	三島由紀夫が「戦後に書かれた最も重要な小説の一つ」と称賛した、北杜夫の作品とは？ - from AERAdot.	https://diamond.jp/articles/-/322881	三島由紀夫が「戦後に書かれた最も重要な小説の一つ」と称賛した、北杜夫の作品とはfromAERAdot北杜夫の作品と聞いてすぐに思い出されるのは、「どくとるマンボウ」シリーズのほのぼのとした雰囲気だろう。	2023-05-14 04:35:00
ビジネス	ダイヤモンド・オンライン - 新着記事	体脂肪を合計15分で落とす高強度筋トレ「HIIT」3種目、効果的な姿勢とやり方は？ - 男のオフビジネス	https://diamond.jp/articles/-/322772	有酸素運動	2023-05-14 04:30:00
ビジネス	ダイヤモンド・オンライン - 新着記事	カナダ西部旅行が「カルガリー直行便開設」で大注目！大自然とローカルグルメを満喫 - 地球の歩き方ニュース＆レポート	https://diamond.jp/articles/-/322716	カナダ西部旅行が「カルガリー直行便開設」で大注目大自然とローカルグルメを満喫地球の歩き方ニュースレポート今回紹介する記事は「カナダ西部旅行が『カルガリー直行便開設』で大注目大自然とローカルグルメを満喫」です。	2023-05-14 04:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	食品包装材のナノプラスチックが脳に到達する可能性、体内の関門を突破する仕組みとは - ヘルスデーニュース	https://diamond.jp/articles/-/322898	研究グループ	2023-05-14 04:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	新日本酒紀行「作」 - 新日本酒紀行	https://diamond.jp/articles/-/322625	三重県鈴鹿市	2023-05-14 04:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「管理職として失格な人」に共通する“たった1つの特徴” - リーダーの仮面	https://diamond.jp/articles/-/321982	「管理職として失格な人」に共通する“たったつの特徴リーダーの仮面悩めるリーダーたちから、「もっと早くこの本に出合いたかった」「刺さりまくった」とこぞって絶賛されている、シリーズ累計万部突破の『リーダーの仮面』。	2023-05-14 04:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	「やりがいのない職場」を作りがちな管理職の共通点・ワースト1 - 佐久間宣行のずるい仕事術	https://diamond.jp/articles/-/322020	佐久間宣行	2023-05-14 04:05:00
ビジネス	東洋経済オンライン	運賃かさむ｢鉄道乗り継ぎ｣避けて安く移動する技 観光地や商業施設｢最寄り駅｣表示にこだわるな | 通勤電車 | 東洋経済オンライン	https://toyokeizai.net/articles/-/672286?utm_source=rss&utm_medium=http&utm_campaign=link_back	乗り継ぎ	2023-05-14 04:30:00
海外TECH	MakeUseOf	How to Enable Siri and AirPlay 2 on an Ecobee Smart Thermostat	https://www.makeuseof.com/how-to-enable-siri-airplay-2-ecobee-smart-thermostat/	speaker	2023-05-13 20:45:17
海外TECH	MakeUseOf	Best Hard Drive and SSD Readers 2023	https://www.makeuseof.com/best-hard-drive-and-ssd-readers/	storage	2023-05-13 20:30:18
ニュース	BBC News - Home	Eurovision: Princess of Wales makes surprise appearance	https://www.bbc.co.uk/news/uk-65586380?at_medium=RSS&at_campaign=KARANGA	crimson	2023-05-13 20:02:54
ニュース	BBC News - Home	Prime Minister Rishi Sunak sees Southampton relegated from Premier League	https://www.bbc.co.uk/news/uk-65585908?at_medium=RSS&at_campaign=KARANGA	boyhood	2023-05-13 20:38:44
ニュース	BBC News - Home	In pictures: Eurovision performances fire up fans	https://www.bbc.co.uk/news/in-pictures-65584321?at_medium=RSS&at_campaign=KARANGA	eurovision	2023-05-13 20:35:50
ビジネス	ダイヤモンド・オンライン - 新着記事	課長の年収が高い業界ランキング【16業界】3位電気・ガス・水道917万円、1位は？ - 部長・課長の残酷 給料・出世・役職定年	https://diamond.jp/articles/-/322088	電気	2023-05-14 05:25:00
ビジネス	ダイヤモンド・オンライン - 新着記事	キリンHDは役職定年＆下位15％自動降格…ビール大手4社の「シニア待遇格差」 - 部長・課長の残酷 給料・出世・役職定年	https://diamond.jp/articles/-/322087	給与格差	2023-05-14 05:20:00
ビジネス	ダイヤモンド・オンライン - 新着記事	村上春樹・松本隆ら大御所に「台湾の20代女性漫画家」が信頼されるワケ - ビジネスを強くする教養	https://diamond.jp/articles/-/322708	村上春樹・松本隆ら大御所に「台湾の代女性漫画家」が信頼されるワケビジネスを強くする教養昨年の春、漫画『緑の歌収集群風』上下巻、KADOKAWAを店頭で発見したとき、表紙画の美しさに驚き買ってしまった。	2023-05-14 05:15:00
ビジネス	ダイヤモンド・オンライン - 新着記事	埼玉・千葉・神奈川で富裕層が住む地域ランキング【相続税納税額で判定】5位浦和、1位は？ - シン富裕層の投資・節税・相続	https://diamond.jp/articles/-/321968	日本全国	2023-05-14 05:10:00
ビジネス	ダイヤモンド・オンライン - 新着記事	年収290万円・55歳男性、前職の退職金1500万円を使い込み借金が…FP提案の解決策は - お金持ちになれる人、貧乏になる人の家計簿　深野康彦	https://diamond.jp/articles/-/322859	深野康彦	2023-05-14 05:05:00
ビジネス	東洋経済オンライン	2浪目の医学部試験中に彼がとった｢衝撃の行動｣ ｢格闘技医学｣の開拓者､二重作さんに話を聞く | 浪人したら人生「劇的に」変わった | 東洋経済オンライン	https://toyokeizai.net/articles/-/671655?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2023-05-14 05:40:00
ビジネス	東洋経済オンライン	｢私､転職できる？｣判別する"3大スキル"はこれだ ｢職種｣｢業種｣別に詳しく解説！あなたはOK? | リーダーシップ・教養・資格・スキル | 東洋経済オンライン	https://toyokeizai.net/articles/-/668709?utm_source=rss&utm_medium=http&utm_campaign=link_back	東洋経済オンライン	2023-05-14 05:20:00