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How do I Search/Find and Replace in a standard string?
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edited Jun 22 '16 at 11:47
jotik
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answered Se...
Scala best way of turning a Collection into a Map-by-key?
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234
You can use
c map (t => t.getP -> t) toMap
but be aware that this needs 2 traversals.
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PowerShell equivalent to grep -f
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answered Mar 4 '13 at 12:06
Frode F.Frode F.
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Changing a specific column name in pandas DataFrame
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1 2 b 8
2 3 c 7
3 4 d 6
4 5 e 5
Following is the docstring for the rename method.
Definition: df.rename(self, index=None, columns=None, copy=True, inplace=False)
Docstring:
Alter index and / or columns using inpu...
Rails: FATAL - Peer authentication failed for user (PG::Error)
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edited Mar 28 '14 at 14:54
Dennis
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character showing up in files. How to remove them?
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answered Sep 4 '11 at 11:47
tripleeetripleee
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Can I target all tags with a single selector?
...The new :is() CSS pseudo-class can do it in one selector:
:is(h1, h2, h3, h4, h5, h6) {
color: red;
}
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Should I inherit from std::exception?
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How do I create a copy of an object in PHP?
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In PHP 5+ objects are passed by reference. In PHP 4 they are passed by value (that's why it had runtime pass by reference, which became deprecated).
You can use the 'clone' operator in PHP5 to copy objects:
$objectB = clone $objectA;
Also, it's just objects that are pass...
Sorting 1 million 8-decimal-digit numbers with 1 MB of RAM
...rder from largest to smallest to the destination, and have only used about 47 bits of RAM for the two persistent variables (and whatever small amount you need for the temporary values).
I know this is horrible, and I know there can be all sorts of practical issues, but I thought it might give some ...