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Linux/Unix command to determine if process is running?
...t because it makes parsing easier.
This will work on Linux, BSD, Solaris, etc.
Another strategy would be to test on the exit value from the above ps command. It should be zero if the process is running and non-zero if it isn't. The POSIX spec says that ps must exit >0 if an error has occurred b...
Best Timer for using in a Windows service
...or parameters without having to
setup configuration values in config
files etc
Far easier to debug/test during development
Allow a support user to execute by invoking
the console application directly
(e.g. useful during support
situations)
...
Checking for NULL pointer in C/C++ [closed]
... compatible with pointer wrapper classes (shared_ptr, auto_ptr, scoped_tr, etc) which typically override operator bool (or safe_bool).
– SoapBox
Sep 29 '10 at 21:01
2
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Difference between binary semaphore and mutex
...ion semaphores are used to protect shared resources (data structure, file, etc..).
A Mutex semaphore is "owned" by the task that takes it. If Task B attempts to semGive a mutex currently held by Task A, Task B's call will return an error and fail.
Mutexes always use the following sequence:
...
Why return NotImplemented instead of raising NotImplementedError
... binary special methods (e.g. __eq__(),
__lt__(), __add__(), __rsub__(), etc.) to indicate that the operation is not implemented with respect to the other type
exception NotImplementedError
[...] In user defined base
classes, abstract methods should raise this exception when they
require...
UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?
...t, configure the text of titleLabel (because of styles, i.e, bold, italic, etc). Then, use setTitleEdgeInsets considering the width of your image:
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
[button setTitle:title forState:UIControlStateNormal];
[button.titleLabel set...
Passing arguments to “make run”
...is
make run arg1=asdf
then use them like this
run: ./prog $(arg1)
etc
References for make
Microsoft's NMake
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Is delete this allowed?
...he call started, possibly connect more people if you do a conference call, etc.) When the last people on the call hang up, the phone_call object does its final book-keeping (e.g., adds an entry to the database to say when you hung up, so they can compute how long your call was) and then destroys its...
Five equal columns in twitter bootstrap
...is make use of Bootstrap's mixin functions make-md-column, make-sm-column, etc.
LESS:
.col-lg-2-4{
.make-lg-column(2.4)
}
.col-md-2-4{
.make-md-column(2.4)
}
.col-sm-2-4{
.make-sm-column(2.4)
}
SASS:
.col-lg-2-4{
@include make-lg-column(2.4)
}
.col-md-2-4{
@include make-md-column(2.4)...
In Vim, how do I apply a macro to a set of lines?
...but all lines till end.. and still take care of the new line, doing stuff, etc.
– ihightower
Jan 19 '19 at 15:42
2
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