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How to write loop in a Makefile?
...e following will do it if, as I assume by your use of ./a.out, you're on a UNIX-type platform.
for number in 1 2 3 4 ; do \
./a.out $$number ; \
done
Test as follows:
target:
for number in 1 2 3 4 ; do \
echo $$number ; \
done
produces:
1
2
3
4
For bigger ranges, use:
t...
Git command to show which specific files are ignored by .gitignore
...k's answer), you can also use the git check-ignore -v command, at least on Unix (doesn't work in a CMD Windows session)
git check-ignore *
git check-ignore -v *
The second one displays the actual rule of the .gitignore which makes a file to be ignored in your git repo.
On Unix, using "What expand...
A semantics for Bash scripts?
...f the shell's syntax comes from its upbringing as a mishmash of individual UNIX utilities. Most of what are often builtins in the shell can actually be implemented as external commands. It throws many shell neophytes for a loop when they realize that /bin/[ exists on many systems.
$ if '/bin/[' -f ...
new Date() works differently in Chrome and Firefox
...rs support parsing of ISO-8601 Date String with Date.parse). Better, use a unix timestamp, i.e. milliseconds since unix epoch, or use a regular expression to break the string down in its parts and then feed those into Date.UTC.
...
Does Git Add have a verbose switch
...
Well, like (almost) every console program for unix-like systems, git does not tell you anything if a command succeeds. It prints out something only if there's something wrong.
However if you want to be sure of what just happened, just type
git status
and see which ch...
How to monitor the memory usage of Node.js?
...
On Linux/Unix (note: Mac OS is a Unix) use top and press M (Shift+M) to sort processes by memory usage.
On Windows use the Task Manager.
share
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Difference between exit(0) and exit(1) in Python
...
@Faizan: The exit code is an 8-bit value on Unix. If you invoke exit(-1), the value is equivalent to exit(255) - the least significant 8 bits are relayed to the calling program (shell or whatever).
– Jonathan Leffler
Feb 6 '15 at...
Is it a good idea to index datetime field in mysql?
...
Here author performed tests showed that integer unix timestamp is better than DateTime. Note, he used MySql. But I feel no matter what DB engine you use comparing integers are slightly faster than comparing dates so int index is better than DateTime index. Take T1 - time o...
Why is no one using make for Java?
... The tooling comment is an interesting one. make comes from a UNIX background so the tooling is done by writing useful compact utilities and pipelining them together. This is why most of the stitching is done using shell commands.
– D.Shawley
Feb 5...
Difference between subprocess.Popen and os.system
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os.system is equivalent to Unix system command, while subprocess was a helper module created to provide many of the facilities provided by the Popen commands with an easier and controllable interface. Those were designed similar to the Unix Popen comma...