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In mongoDb, how do you remove an array element by its index?
...ex. 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 comme...
NSDate beginning of day and end of day
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edited Jan 10 '18 at 22:54
shim
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an...
Log to the base 2 in python
...s the natural logarithm (base e) of x.
In [25]: math.log(8,2)
Out[25]: 3.0
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C++应用程序添加VBScript和JavaScript支持 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...tParam(aParam)
{
var strPresent = "Parameter is : " + (aParam.length>0 ? "Present": "Not present");
return strPresent;
}
The same technique may be used in VBScript. This allows you to detect variable length argument at run time. To call a function without argument, a SAFERRAY is creat...
HTML text input field with currency symbol
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104
Consider simulating an input field with a fixed prefix or suffix using a span with a border aro...
Batch script loop
I need to execute a command 100-200 times, and so far my research indicates that I would either have to copy/paste 100 copies of this command, OR use a for loop, but the for loop expects a list of items, hence I would need 200 files to operate on, or a list of 200 items, defeating the point.
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Windows batch files: .bat vs .cmd?
...RRORLEVEL
only on errors.
In other words, if ERRORLEVEL is set to non-0 and then you run one of those commands, the resulting ERRORLEVEL will be:
left alone at its non-0 value in a .bat file
reset to 0 in a .cmd file.
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Get DateTime.Now with milliseconds precision
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309
How can I exactly construct a time stamp of actual time with milliseconds precision?
I sus...
Convert file path to a file URI?
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Pierre Arnaud
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answered Oct 9 '09 at 22:45
JaredParJaredPar
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How do I skip an iteration of a `foreach` loop?
... // |
if (number < 0) // |
{ // |
continue; // Skip the remainder of this iteration. -----+
}
// do work
}
Here's more a...