大约有 15,467 项符合查询结果（耗时：0.0339秒） [XML]
How to check if there exists a process with a given pid in Python?
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haridsv suggests the test should be e.errno != 3; perhaps e.errno != errno.ESRCH
– Jason R. Coombs
Feb 22 '12 at 12:12
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What is the difference between is_a and instanceof?
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Here is performance results of is_a() and instanceof:
Test name Repeats Result Performance
instanceof 10000 0.028343 sec +0.00%
is_a() 10000 0.043927 sec -54.98%
Test source is here.
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Running Python code in Vim
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@BenjaminChausse Sorry for the delayed response. I did a test with a .vimrc that contained exclusively that code and it worked from what i could tell. My testing was limited to opening a .py file and hitting F5 which resulted in python output appearing in a separate vim window. ...
How to count items in JSON object using command line?
...q, a lightweight and flexible command-line JSON processor:
jq length /tmp/test.json
Prints the length of the array of objects.
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What is the Linux equivalent to DOS pause?
..., 0 correct input. Put $? in a variable as soon as possible if you need to test it after somes commands, because all commands would rewrite $?
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How do you count the lines of code in a Visual Studio solution?
...e would count, instead of 18 actual non-blank lines:
public class Test
{
/// <summary>
/// Do Stuff
/// </summary>
public Test()
{
TestMe();
}
public void TestMe()
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How to apply !important using .css()?
...s*:\\s*[^\\s]*\\s*!important(\\s*;)?',
'gmi');
return rule.test(this.cssText) ? 'important' : '';
}
}
// The style function
$.fn.style = function(styleName, value, priority) {
// DOM node
var node = this.get(0);
// Ensure we have a DOM node
if (typeof node ...
A list of indices in MongoDB?
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From the shell:
db.test.getIndexes()
For shell help you should try:
help;
db.help();
db.test.help();
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How can I add or update a query string parameter?
...[?&])" + key + "=.*?(&|#|$)(.*)", "gi"),
hash;
if (re.test(url)) {
if (typeof value !== 'undefined' && value !== null) {
return url.replace(re, '$1' + key + "=" + value + '$2$3');
}
else {
hash = url.split('#');
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Parse a URI String into Name-Value Collection
...ork:
public static void main(String[] args) {
String uri = "http://my.test.com/test?param1=ab&param2=cd&param2=ef";
MultiValueMap<String, String> parameters =
UriComponentsBuilder.fromUriString(uri).build().getQueryParams();
List<String> param1 = paramete...