大约有 30,000 项符合查询结果(耗时:0.0446秒) [XML]

https://stackoverflow.com/ques... 

Formatting a number with exactly two decimals in JavaScript

...lue[0] + 'e' + (value[1] ? (+value[1] - 2) : -2))).toFixed(2); } You can call it with: round2Fixed(10.8034); // Returns "10.80" round2Fixed(10.8); // Returns "10.80" Various examples and tests (thanks to @t-j-crowder!): function round(value, exp) { if (typeof exp === 'undefined' ||...
https://stackoverflow.com/ques... 

iOS Equivalent For Android Shared Preferences

...common write function and for read create function based on data type. And call your required method from anywhere. ViewController.swift // write data writeAnyData(key: "MY_KEY", value: "MyData") // read string data readStringData(key: "MY_KEY"), animated: true) Utils.swift // read...
https://stackoverflow.com/ques... 

Email Address Validation in Android on EditText [duplicate]

How can we perform Email Validation on edittext in android ? I have gone through google & SO but I didn't find out a simple way to validate it. ...
https://stackoverflow.com/ques... 

What are all codecs and formats supported by FFmpeg?

...e intent of the questioner, but I don't consider it abstract. If a client calls and ask me to support the Purple Unicorn Codec 2.718, it wouldn't occur to me to do ffmpeg -formats. – mikerobi Oct 5 '11 at 23:24 ...
https://stackoverflow.com/ques... 

How to prevent that the password to decrypt the private key has to be entered every time when using

...tory. The problem is that when it tries to clone repository it need to provide the password, because it is not remembered; so because there is no human interaction, it waits forever the password. How can I force it to remember from id_rsa.pub? ...
https://stackoverflow.com/ques... 

How do I byte-compile everything in my .emacs.d directory?

... The interactive command unfortunately doesn't expose it, but if you call the function directly you can use the optional argument FORCE to recompile files that already have an associated ".elc" even if they're not older than the source file: M-: (byte-recompile-directory "/the/directory/" 0 t)...
https://stackoverflow.com/ques... 

What do the &,

Up until now I have only used database.yml with each parameter called out explicitly, in the file below it uses some characters I do not understand. What does each line and symbol(&,*, ...
https://stackoverflow.com/ques... 

What does it mean by select 1 from table?

...ver, common enough to be noted, even if it isn't really meaningful (that said, I will use it because others use it and it is "more obvious" immediately. Of course, that might be a viscous chicken vs. egg issue, but I don't generally dwell)). SELECT * FROM TABLE1 T1 WHERE EXISTS ( SELECT 1 FRO...
https://stackoverflow.com/ques... 

nodeValue vs innerHTML and textContent. How to choose?

... text, does not parse HTML, and is faster. innerText Takes styles into consideration. It won't get hidden text for instance. innerText didn't exist in firefox until FireFox 45 according to caniuse but is now supported in all major browsers. ...
https://stackoverflow.com/ques... 

Get last element of Stream/List in a one-liner

... "The streams classes have multiple forms of general reduction operations, called reduce() and collect() [..]" and "a properly constructed reduce operation is inherently parallelizable, so long as the function(s) used to process the elements are associative and stateless." The documentation for th...