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Why do we have map, fmap and liftM?
... see an error about lists than about Functors.
-- Typeclassopedia, page 20
fmap and liftM exist because monads were not automatically functors in Haskell:
The fact that we have both fmap and liftM is an
unfortunate consequence of the fact that the Monad type class does not require
a Funct...
Converting an integer to a string in PHP
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800
You can use the strval() function to convert a number to a string.
From a maintenance perspecti...
ADO.NET DataRow - check for column existence
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edited Feb 7 '11 at 23:20
BlueRaja - Danny Pflughoeft
72.3k2525 gold badges169169 silver badges251251 bronze badges
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Chrome extension: force popup.html to close
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205
Within a popup javascript:
window.close();
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Rails filtering array of objects by attribute value
...html#method-i-partition
– Vlad
Jun 20 '16 at 21:04
Thanks @Vlad, thats cool, but it support only if we need to collect...
git discard all changes and pull from upstream
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edited Jan 3 '19 at 18:02
answered Dec 8 '12 at 20:08
Er...
@Override is not allowed when implementing interface method
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answered Mar 14 '13 at 9:06
Bastien JansenBastien Jansen
8,07622 gold badges2828 silver badges4949 bronze badges
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git stash apply version
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904
The keys into the stash are actually the stash@{n} items on the left. So try:
git stash apply...
Add leading zeroes/0's to existing Excel values to certain length
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508
=TEXT(A1,"0000")
However the TEXT function is able to do other fancy stuff like date formatin...
Max length for client ip address [duplicate]
...e IP address (each of the numbers between the periods in an IP address are 0-255, i.e., one byte). But then you would have to translate going in and out of the DB and that's messy.
IPv6 addresses are 128 bits (as opposed to 32 bits of IPv4 addresses). They are usually written as 8 groups of 4 hex...