大约有 22,000 项符合查询结果(耗时:0.0366秒) [XML]

https://stackoverflow.com/ques... 

Casting a variable using a Type variable

... int x = (int)obj; DoSomethingWithInt(x); } else if (type == typeof(string)) { string s = (string)obj; DoSomethingWithString(s); } // ... share | improve this answer | ...
https://stackoverflow.com/ques... 

How can I delete all unversioned/ignored files/folders in my working copy?

...status --no-ignore | grep '^[I?]' | cut -c 9- | # setting IFS to the empty string ensures that any leading or # trailing whitespace is not trimmed from the filename while IFS= read -r f; do # tell the user which file is being deleted. use printf # instead of echo because different implement...
https://stackoverflow.com/ques... 

Why use multiple columns as primary keys (composite primary key)

...going to, in general, perform more poorly than a surrogate key'. Often an extra query is required to get the surrogate key of a relationship when you consider it. At which point it's a full extra round trip slower performance wise. – ttugates Apr 19 '19 at 20...
https://stackoverflow.com/ques... 

Select columns from result set of stored procedure

...UERY over OPENROWSET, given that OPENQUERY does not require the connection-string definition within the proc. Note 2: Having said all this: normally I would just use INSERT ... EXEC :) Yes, it's 10 mins extra typing, but if I can help it, I prefer not to jigger around with: (a) quotes within qu...
https://stackoverflow.com/ques... 

Good reasons to prohibit inheritance in Java?

...re writing purely internal code this may be a bit of overkill. However the extra effort involved in adding five characters to a class file is very small. If you are writing only for internal comsumption then a future coder can always remove the 'final' - you can think of it as a warning saying "this...
https://stackoverflow.com/ques... 

Event on a disabled input

...vidual container of its own, if they aren't already laid out that way - an extra <span> or a <div>, say - just to make it easy to distinguish which disabled input was clicked). The downside is that this trick unfortunately won't works for older browsers that don't support the pointer-...
https://stackoverflow.com/ques... 

How to parse a CSV file using PHP [duplicate]

... I love this $data = str_getcsv($CsvString, "\n"); //parse the rows foreach ($data as &$row) { $row = str_getcsv($row, "; or , or whatever you want"); //parse the items in rows $this->debug($row); } in my case I...
https://stackoverflow.com/ques... 

How do I repeat an edit on multiple lines in Vim?

...TRL-v or CTRL-V. Vim is case-insensitive for CTRL- codes (see :help CTRL-{char}). – rampion Dec 10 '08 at 21:37 2 ...
https://stackoverflow.com/ques... 

JavaScript window resize event

... removing event listeners, but in the case that you don't, adding all that extra code like in the example above is unnecessary and can both to bloat and less readability. In my opinion, if you don't envision a reason to need to remove the listener, this approach is the best solution. You can always ...
https://stackoverflow.com/ques... 

FFmpeg on Android

...essage()); } ShellDummy shell = new ShellDummy(); String mp3BitRate = "192"; try { ffmpeg.extractAudio(in, out, audio, mp3BitRate, shell); } catch (IOException e) { Log.e(DEBUG_TAG, "IOException running ffmpeg" + e.getMessage()); ...