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Why is SELECT * considered harmful?
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322
There are really three major reasons:
Inefficiency in moving data to the consumer. When you...
Truncate a list to a given number of elements
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stash@{1} is ambiguous?
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234
Your shell is eating your curly brackets, so while you say stash@{1}, git sees stash@1 and that...
Curly braces in string in PHP
...ax
echo "This works: {$arr['key']}";
// Works
echo "This works: {$arr[4][3]}";
// This is wrong for the same reason as $foo[bar] is wrong outside a string.
// In other words, it will still work, but only because PHP first looks for a
// constant named foo; an error of level E_NOTICE (undefined c...
Ruby combining an array into one string
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URL encode sees “&” (ampersand) as “&” HTML entity
... encodeURI or encodeURIComponent , & will be replaced with %26amp%3B , but I want it to be replaced with %26 . What am I doing wrong?
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How to add additional fields to form before submit?
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163
Yes.You can try with some hidden params.
$("#form").submit( function(eventObj) {
$("<...
How to get the python.exe location programmatically? [duplicate]
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How to empty a list?
...bel with a new empty list:
del lst[:]
Here's an example:
lst1 = [1, 2, 3]
lst2 = lst1
del lst1[:]
print(lst2)
For the sake of completeness, the slice assignment has the same effect:
lst[:] = []
It can also be used to shrink a part of the list while replacing a part at the same time (but tha...