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Will writeToFile:atomically: overwrite data?
...r saved in its entirety, or it
fails completely. The atomic write begins by writing the data to a
temporary file. If this write succeeds, then the method moves the
temporary file to its final location.
No one word about checking if file exist.
For example, for method copyItemAtPath:toPath:e...
What is the use case of noop [:] in bash?
...oesn't do anything. In this example the "verbosity" command is turned off by default, by setting it to :. The 'v' option turns it on.
#!/bin/sh
# example
verbosity=:
while getopts v OPT ; do
case $OPT in
v)
verbosit...
Difference between VARCHAR and TEXT in MySQL [duplicate]
...d max size of 65535 characters (you cannot limit the max size)
takes 2 + c bytes of disk space, where c is the length of the stored string.
cannot be (fully) part of an index. One would need to specify a prefix length.
VARCHAR(M)
variable max size of M characters
M needs to be between 1 and 6553...
Applying a git post-commit hook to all current and future repos
... @Richlewis You would need to setup a shared folder accessible by all devs, for them to reference in their own local config.
– VonC
Nov 11 '16 at 15:47
...
How do you allow spaces to be entered using scanf?
...ith the additional catch that the \n final isn't read; this will be hidden by that fact that most formats start by skipping white spaces, but [ isn't one of them. I don't understand the instance at using scanf to read strings.
– AProgrammer
Aug 9 '09 at 6:09
...
INSERT IF NOT EXISTS ELSE UPDATE?
...on Confliction from new one. In above case all other data will be replaced by new one that is not correct.
– Mrug
Apr 9 '14 at 11:25
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How to get unique values in an array
...that was the kind if geeky javascript-nerd answer that should only be used by someone who understands what it means, and possibly not even then. What it is saying, is that writing if (~a.indexOf(b)) ... is identical to writing the longer if (a.indexOf(b) == -1) ....
– Orwellop...
See all breakpoints in Visual Studio 2010+
...
Ctrl+Alt+B by default here. (Possibly due to ReSharper though)
– RJFalconer
Sep 4 '12 at 9:29
7
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How can I force division to be floating point? Division keeps rounding down to 0?
...ces an int. In Python 3, it produces a float. We can get the new behaviour by importing from __future__.
>>> from __future__ import division
>>> a = 4
>>> b = 6
>>> c = a / b
>>> c
0.66666666666666663
...
val() vs. text() for textarea
...text('test').val('too').text()); // Prints test
The value property, used by .val() always shows the current visible value, whereas text()'s return value can be wrong.
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