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Remove blank attributes from an Object in Javascript
... test3 : 3,
}
function clean(obj) {
for (var propName in obj) {
if (obj[propName] === null || obj[propName] === undefined) {
delete obj[propName];
}
}
}
clean(test);
If you're concerned about this property removal not running up object's proptype chain, you can also:
funct...
JavaScript is in array
...
Try this:
if(blockedTile.indexOf("118") != -1)
{
// element found
}
share
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improve this answer
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follo...
How do I look inside a Python object?
...
I beg to differ. dir() is just so much quicker and in 99% of the cases let's you find out what you need in combination with help().
– bayer
Jun 17 '09 at 17:22
...
PSQLException: current transaction is aborted, commands ignored until end of transaction block
...tarted using Postgres... it's really annoying that Postgres does this, and now we have to be really rewrite a big bulk of our program that we are porting from Oracle to Postgres. Why isn't there an option like the first to make it behave like Oracle but without the auto-commit?
...
Hidden Features of Java
...d it, never heard of it before.
ThreadLocals are typically not so widely known as a way to store per-thread state.
Since JDK 1.5 Java has had extremely well implemented and robust concurrency tools beyond just locks, they live in java.util.concurrent and a specifically interesting example is the j...
What tools are there for functional programming in C?
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Sadly, this doesn’t work in practice: if you want the closure to capture anything, it requires an executable stack, which is a terrible security practice. Personally, I don’t think it is useful at all.
– Demi
Aug 2 '17 at...
sqlalchemy IS NOT NULL select
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The other answer is the preferred answer now; it also avoids many IDEs including PyCharm from generating warnings.
– Antti Haapala
Oct 6 '16 at 7:21
...
How to filter array in subdocument with MongoDB [duplicate]
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Does the aggregation operation modify the document or does it just perform a selection ?
– Cherif
Oct 27 '13 at 22:18
3
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MFC 日期时间控件CDateTimeCtrl自绘 - C/C++ - 清泛网 - 专注C/C++及内核技术
...nclude "stdafx.h"
#include "MyDateTime.h"
#include "../CommonFunc.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
CMyDateTime::CMyDateTime()
{
m_nIDLeft = m_nIDRight = m_nIDCenter = 0;
//m_nIDListLeft, m_nIDListRight, m_nIDListTop, ...
PHP check whether property exists in object or class
...
property_exists( mixed $class , string $property )
if (property_exists($ob, 'a'))
isset( mixed $var [, mixed $... ] )
if (isset($ob->a))
isset() will return false if property is null
Example 1:
$ob->a = null
var_dump(isset($ob->a)); // false
Example 2: ...