大约有 47,000 项符合查询结果(耗时:0.0539秒) [XML]

https://stackoverflow.com/ques... 

Get first n characters of a string

... //The simple version for 10 Characters from the beginning of the string $string = substr($string,0,10).'...'; Update: Based on suggestion for checking length (and also ensuring similar lengths on trimmed and untrimmed strings): $string = (strlen($...
https://stackoverflow.com/ques... 

Ruby/Rails: converting a Date to a UNIX timestamp

How would I get a UNIX timestamp (number of seconds since 1970 GMT) from a Date object in a Rails app? 5 Answers ...
https://stackoverflow.com/ques... 

memory_get_peak_usage() with “real usage”

... +400 Ok, lets test this using a simple script: ini_set('memory_limit', '1M'); $x = ''; while(true) { echo "not real: ".(memory_get_peak...
https://stackoverflow.com/ques... 

How can I check if a Perl array contains a particular value?

... 190 Simply turn the array into a hash: my %params = map { $_ => 1 } @badparams; if(exists($para...
https://stackoverflow.com/ques... 

NSLog/printf specifier for NSInteger?

... | edited Jan 26 at 0:57 answered Dec 10 '10 at 2:04 ...
https://stackoverflow.com/ques... 

How to Get a Layout Inflater Given a Context?

... answered Feb 6 '10 at 5:45 Dave WebbDave Webb 175k5454 gold badges298298 silver badges296296 bronze badges ...
https://stackoverflow.com/ques... 

How can I suppress column header output for a single SQL statement?

... pete | | 2 | john | | 3 | mike | +------+-------+ 3 rows in set (0.00 sec) Credit to ErichBSchulz for pointing out the -N alias. To remove the grid (the vertical and horizontal lines) around the results use -s (--silent). Columns are separated with a TAB character. mysql -s ... use tes...
https://stackoverflow.com/ques... 

Greenlet Vs. Threads

... 208 Greenlets provide concurrency but not parallelism. Concurrency is when code can run independent...
https://stackoverflow.com/ques... 

Detect & Record Audio in Python

... 106 As a follow up to Nick Fortescue's answer, here's a more complete example of how to record from...
https://stackoverflow.com/ques... 

Appending to an existing string

... answered Mar 1 '10 at 15:44 sepp2ksepp2k 331k4747 gold badges636636 silver badges653653 bronze badges ...