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Memory address of variables in Java
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That is the class name and System.identityHashCode() separated by the '@' character. What the identity hash code represents is implementation-specific. It often is the initial memory address of the object, but the object can be moved in memory by t...
glob exclude pattern
I have a directory with a bunch of files inside: eee2314 , asd3442 ... and eph .
10 Answers
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Which is the best Linux C/C++ debugger (or front-end to gdb) to help teaching programming? [closed]
...("lite" meaning no pointers, no classes, just plain old C, plus references and STL string and vectors). Students have no previous experience in programming, so I believe that using an interactive debugger would help them understand program flow, variables, and recursion.
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How to compare binary files to check if they are the same?
What is the easiest way (using a graphical tool or command line on Ubuntu Linux) to know if two binary files are the same or not (except for the time stamps)? I do not need to actually extract the difference. I just need to know whether they are the same or not.
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Make git automatically remove trailing whitespace before committing
...vince Git to treat your changes as a patch:
git add -up .
Hit a+enterto select all changes for each file. You'll get a warning about Git fixing your whitespace errors.
(git -c color.ui=auto diff at this point reveals that your non-indexed changes are exactly the whitespace errors).
Remove the wh...
START_STICKY and START_NOT_STICKY
What is the difference between START_STICKY and START_NOT_STICKY while implementing services in android? Could anyone point out to some standard examples.. ?
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How to make a python, command-line program autocomplete arbitrary things NOT interpreter
...import readline
def completer(text, state):
options = [i for i in commands if i.startswith(text)]
if state < len(options):
return options[state]
else:
return None
readline.parse_and_bind("tab: complete")
readline.set_completer(completer)
The official module docs ar...
Exif manipulation library for python [closed]
...nt to check out exif-py:
Python library to extract EXIF data from tiff and jpeg files. Very easy to use - $ ./EXIF.py image.jpg
or the Python Imaging Library (PIL):
The Python Imaging Library (PIL) adds image processing capabilities to your Python interpreter. This library supports many fi...
UIActionSheet cancel button strange behaviour
...I can only activate it by clicking somewhere in the middle of the "Cancel" and "Ok" buttons.
7 Answers
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How do I rename all folders and files to lowercase on Linux?
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A concise version using the "rename" command:
find my_root_dir -depth -exec rename 's/(.*)\/([^\/]*)/$1\/\L$2/' {} \;
This avoids problems with directories being renamed before files and trying to move files into non-existing directories (e.g. "A/A" into "a/a").
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