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When to use PNG or JPG in iPhone development?
...n't say PNG decompression requires "very little" energy; the Other.artwork file appears to be raw bitmap data, presumably because the CPU/memory overhead of PNG decompression is too much for commonly-used UI components.
– tc.
Oct 14 '10 at 2:06
...
Shell script to delete directories older than n days
...+10 -exec rm -rf {} \;
Explanation:
find: the unix command for finding files / directories / links etc.
/path/to/base/dir: the directory to start your search in.
-type d: only find directories
-ctime +10: only consider the ones with modification time older than 10 days
-exec ... \;: for each suc...
How to get the process ID to kill a nohup process?
... script, $! represents the PID of the last process executed). The 2 is the file descriptor for standard error (stderr) and 2>&1 tells the shell to route standard error output to the standard output (file descriptor 1). It requires &1 so that the shell knows it's a file descriptor in that ...
How to check if a python module exists without importing it
...portlib.find_loader('spam')
# only accept it as valid if there is a source file for the module - no bytecode only.
found = issubclass(type(spam_loader), importlib.machinery.SourceFileLoader)
Python3 ≥ 3.4
In Python3.4 importlib.find_loader python docs was deprecated in favour of importlib.util.fi...
Can Git hook scripts be managed along with the repository?
... git version 2.9 now has a config option for core.hooksPath to set up a file outside of .git to link to the hooks folder.
– Aaron Rabinowitz
May 29 '18 at 16:52
add a comm...
How to access java-classes in the default-package?
...the source generated by groovy, some post-processing is needed to move the file into a dedicated package and add this "package" directive at its beginning.
Update 2014: bug 6975015, for JDK7 and JDK8, describe an even stricter prohibition against import from unnamed package.
The TypeName must be t...
How to execute a Python script from the Django shell?
...myscript.py
You could also do:
$ ./manage.py shell
...
>>> execfile('myscript.py')
For python3 you would need to use
>>> exec(open('myscript.py').read())
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How do I profile memory usage in Python?
...
This one has been answered already here: Python memory profiler
Basically you do something like that (cited from Guppy-PE):
>>> from guppy import hpy; h=hpy()
>>> h.heap()
Partition of a set of 48477 objects. Total size = 3265516 bytes.
Index Count % Size...
How to do a PUT request with curl?
...Type: application/json" -d '{"key1":"value"}' "YOUR_URI"
c) If sending a file with a POST request:
curl -X POST "YOUR_URI" -F 'file=@/file-path.csv'
Alternative solution:
You can use the POSTMAN app from Chrome Store to get the equivalent cURL request. This is especially useful when writing m...
How to set the font size in Emacs?
I also want to save the font size in my .emacs file.
17 Answers
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