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MySQL, better to insert NULL or empty string?
...re differences:
A LENGTH of NULL is NULL, a LENGTH of an empty string is 0.
NULLs are sorted before the empty strings.
COUNT(message) will count empty strings but not NULLs
You can search for an empty string using a bound variable but not for a NULL. This query:
SELECT *
FROM mytable
WHERE ...
Convert PHP closing tag into comment
... you.
– v1n_vampire
Mar 5 '13 at 9:30
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I had to use this trick in C 2 days ago for a string cont...
PHP - Check if two arrays are equal
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$arraysAreEqual = ($a == $b); // TRUE if $a and $b have the same key/value pairs.
$arraysAreEqua...
How to check if APK is signed or “debug build”?
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Getting all types that implement an interface
... reflection, how can I get all types that implement an interface with C# 3.0/.NET 3.5 with the least code, and minimizing iterations?
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Maven Run Project
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edited Jun 20 '18 at 16:17
Nadjib Mami
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Why are there no ++ and -- operators in Python?
...ed as much as in other languages. You don't write things like for(int i = 0; i < 10; ++i) in Python very often; instead you do things like for i in range(0, 10).
Since it's not needed nearly as often, there's much less reason to give it its own special syntax; when you do need to increment, += ...
Func delegate with no return type
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edited Dec 4 '17 at 17:07
mantale
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answered May 27 '09 at 19:2...
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... Zim
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answered Apr 26 '12 at 15:08
AkutaAkuta
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How do I loop through a list by twos? [duplicate]
...You can use for in range with a step size of 2:
Python 2
for i in xrange(0,10,2):
print(i)
Python 3
for i in range(0,10,2):
print(i)
Note: Use xrange in Python 2 instead of range because it is more efficient as it generates an iterable object, and not the whole list.
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