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Format a datetime into a string with milliseconds
I want to have a datetime string from the date with milliseconds. This code is typical for me and I'm eager to learn how to shorten it.
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Adding one day to a date
... before day adding: ' . $stop_date;
$stop_date = date('Y-m-d H:i:s', strtotime($stop_date . ' +1 day'));
echo 'date after adding 1 day: ' . $stop_date;
?>
For PHP 5.2.0+, you may also do as follows:
$stop_date = new DateTime('2009-09-30 20:24:00');
echo 'date before day adding: ' . $stop_date...
Convert DateTime to String PHP
I have already researched a lot of site on how can I convert PHP DateTime object to String. I always see "String to DateTime" and not "DateTime to String"
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Length of an integer in Python
...og10 method took only 7.486343383789062e-05 seconds, approximately 1501388 times faster!
– FadedCoder
Mar 19 '17 at 16:30
1
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How can I String.Format a TimeSpan object with a custom format in .NET?
What is the recommended way of formatting TimeSpan objects into a string with a custom format?
19 Answers
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Getting the first character of a string with $str[0]
... $string = md5(rand());
$position = rand(0, 31);
$start1 = microtime(true);
$char1 = $string[$position];
$end1 = microtime(true);
$time1[$i] = $end1 - $start1;
$start2 = microtime(true);
$char2 = substr($string, $position, 1);
$end2 = microtime(true);
$time2[$...
Replace multiple whitespaces with single whitespace in JavaScript string
I have strings with extra whitespaces, each time there's more than only one whitespace I'd like it be only one.
11 Answers
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top命令使用详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...行是系统整体的统计信息。第一行是任务队列信息，同 uptime 命令的执行结果。其内容如下：
01:06:48
当前时间
up 17 days, 6:21
系统运行时间，格式为时:天数，小时:分钟
1 user
当前登录用户数
load avera...
Are tuples more efficient than lists in Python?
...tecode and just referenced when used, whereas lists need to be built at runtime.
– poolie
May 14 '13 at 22:32
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How do you calculate log base 2 in Java for integers?
...slightly faster than Integer.numberOfLeadingZeros() (20-30%) and almost 10 times faster (jdk 1.6 x64) than a Math.log() based implementation like this one:
private static final double log2div = 1.000000000001 / Math.log( 2 );
public static int log2fp0( int bits )
{
if( bits == 0 )
retur...