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What does “|=” mean? (pipe equal operator)
...e than 1<<1 or 10 in binary
public static final int DEFAULT_LIGHTS = 4; // is the same than 1<<2 or 100 in binary
So you can use bit-wise OR to add flags
int myFlags = DEFAULT_SOUND | DEFAULT_VIBRATE; // same as 001 | 010, producing 011
so
myFlags |= DEFAULT_LIGHTS;
simply means ...
In mongoDb, how do you remove an array element by its index?
.... In fact, this is an open issue http://jira.mongodb.org/browse/SERVER-1014 , you may vote for it.
The workaround is using $unset and then $pull:
db.lists.update({}, {$unset : {"interests.3" : 1 }})
db.lists.update({}, {$pull : {"interests" : null}})
Update: as mentioned in some of the comment...
How to zip a whole folder using PHP
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324
Code updated 2015/04/22.
Zip a whole folder:
// Get real path for our folder
$rootPath = realp...
Can't find the 'libpq-fe.h header when trying to install pg gem
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41 Answers
41
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使用CSplitterWnd实现拆分窗口（多视图显示） - C/C++ - 清泛网 - 专注C/C++及内核技术
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if(!m_wndSplitter.CreateView(0,0,RUNTIME_CLASS(CTest),CSize(rect.Width()/4,rect.Height()),pContext)||
!m_wndSplitter.CreateView(0,1,RUNTIME_CLASS(CSplitterSDIView), CSize(rect.Width()/4*3,rect.Height()),pContext))
{
return FALSE;
}
return TRUE;
}
重载该函数之前需要做的步...
How to set data attributes in HTML elements
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464
HTML
<div id="mydiv" data-myval="10"></div>
JS
var a = $('#mydiv').data('myval...
Should I use JSLint or JSHint JavaScript validation? [closed]
...eySpudley
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3
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What's the difference between an inverted index and a plain old index?
... description of what's contained in those documents (chapters).
Example 4: Your cell phone
The forward index in your cell phone is your list of contacts, and which phone numbers (cell, home, work) are associated with those contacts. The inverted index is what allows you to manually enter a phone...
How can I parse a CSV string with JavaScript, which contains comma in data?
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Disclaimer
2014-12-01 Update: The answer below works only for one very specific format of CSV. As correctly pointed out by DG in the comments, this solution does not fit the RFC 4180 definition of CSV and it also does not fit Microsoft Exc...
How to convert a byte array to a hex string in Java?
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924
From the discussion here, and especially this answer, this is the function I currently use:
priv...