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Expand/collapse section in UITableView in iOS
...t of its section, just like the regular Apple section headers. that's not possible if you simply add a cell at the beginning of the section
– user102008
Apr 20 '11 at 22:25
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How does a “stack overflow” occur and how do you prevent it?
...is when you've used up more memory for the stack than your program was supposed to use. In embedded systems you might only have 256 bytes for the stack, and if each function takes up 32 bytes then you can only have function calls 8 deep - function 1 calls function 2 who calls function 3 who calls f...
Using i and j as variables in Matlab
...erride them, potentially silently breaking code that does complex maths.
Possible solutions include using ii and jj as loop variables instead, or using 1i whenever i is required to represent the imaginary unit.
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Creating a system overlay window (always on top)
... "will not receive the full up/move/down gesture". In other words, it not possible to detect swipes or anything else other than a ACTION_DOWN. Well I know that it is possible to detect swipes because Wave Launcher uses this similar concept and they are able to detect swipes. Can anyone explain to me...
How do I put an already-running process under nohup?
...er with the jobs command) so that the job isn't killed when the terminal closes.
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Is it possible to have different Git configuration for different projects?
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The .git/config file in a particular clone of a repository is local to that clone. Any settings placed there will only affect actions for that particular project.
(By default, git config modifies .git/config, not ~/.gitconfig - only with --global does it modify the latter.)
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What is the difference between varchar and nvarchar?
...ses only ASCII, I would still recommend using Unicode in the database. The OS and database collation algorithms will work better with Unicode. Unicode avoids conversion problems when interfacing with other systems. And you will be preparing for the future. And you can always validate that your data ...
What are the most-used vim commands/keypresses?
...pecific line number
By marker:
mx set mark x; 'x go to mark x
'. go to position of last edit
' ' go back to last point before jump
Scrolling:
^F forward full screen; ^B backward full screen
^D down half screen; ^U up half screen
^E scroll one line up; ^Y scroll one line down
zz centre cursor l...
UltiSnips and YouCompleteMe
...hould be the best answer, simple and straight, although in my macvim on macOS 10.12, <c-j> doesn't work, I change it to <c-k>, then everything works just fine. <tab> forward, <s-tab> backward, <c-k> expand the snippet. Thanks
– gpanda
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How to represent multiple conditions in a shell if statement?
... "$g" -eq 2 -a "$c" = "456" \) ]
then echo abc
else echo efg
fi
I've enclosed the references to $g in double quotes; that's good practice, in general. Strictly, the parentheses aren't needed because the precedence of -a and -o makes it correct even without them.
Note that the -a and -o operators...