大约有 46,000 项符合查询结果（耗时：0.0432秒） [XML]
Regular expression for letters, numbers and - _
...et to show how you can use this pattern:
<?php
$arr = array(
'screen123.css',
'screen-new-file.css',
'screen_new.js',
'screen new file.css'
);
foreach ($arr as $s) {
if (preg_match('/^[\w.-]*$/', $s)) {
print "$s is a match\n";
} else {
print "$s is NO match!!!\n";
};
}
...
Simple regular expression for a decimal with a precision of 2
...\d{1,2})?$
To match numbers without a leading digit before the decimal (.12) and whole numbers having a trailing period (12.) while excluding input of a single period (.), try the following:
^(\d+(\.\d{0,2})?|\.?\d{1,2})$
Added
Wrapped the fractional portion in ()? to make it optional. Be a...
Regex to validate date format dd/mm/yyyy
... |
edited Nov 17 '14 at 12:21
answered Nov 17 '14 at 11:56
...
how to solve “ruby installation is missing psych” error?
...
In my case
rvm pkg install libyaml
and
rvm reinstall ruby-1.9.3-p125
solved the problem.
For people using Ubuntu, make sure that libtool is installed prior to the steps above:
sudo apt-get install libtool
For macOS users (with homebrew):
rm -rf /usr/local/lib/ruby/gems/ && b...
Searching for UUIDs in text with regex
...relying on the assumption that all UUIDs will follow a patttern of 8-4-4-4-12 hexadecimal digits.
16 Answers
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Why number 9 in kill -9 command in unix? [closed]
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answered Mar 30 '12 at 23:27
Rafał RawickiRafał Rawicki
20.3k33 gold badges5353 silver badges7575 bronze badges
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Skip first entry in for loop in python?
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answered Apr 9 '12 at 20:17
agfagf
140k3232 gold badges260260 silver badges222222 bronze badges
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The Ruby %r{ } expression
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answered Sep 12 '12 at 9:10
EurekaEureka
5,21522 gold badges1919 silver badges1515 bronze badges
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How do I use grep to search the current directory for all files having the a string “hello” yet disp
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GypsyCosmonaut
31277 silver badges1313 bronze badges
answered Feb 9 '12 at 19:24
stackoverflowstackoverflow
...