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Python serialization - Why pickle?
...that does respect Object programming - different from an output written in txt file or DB.
4 Answers
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emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?
...nted is a description (but cannot be read). For example:
#<buffer foo.txt>
It is also used in constructs by the reader to represent circular structures. See the docs for Read Syntax for Circular Objects.
And then you have its use for denoting the base for integers, e.g. #x2c -> 44.
P...
How to evaluate a math expression given in string form?
...getEngineByName("JavaScript") .eval("var f = new java.io.FileWriter('hello.txt'); f.write('UNLIMITED POWER!'); f.close();"); -- will write a file via JavaScript into (by default) the program's current directory
– Boann
Feb 27 '16 at 13:37
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PostgreSQL disable more output
...ut somewhere, regular and errors.
psql db -f sql.sql 2>&1 > log.txt
mind you there can not be spaces between 2>&1
Finally and sometimes most interesting is the fact that you can suppress all output by using &>, for when you want it 'perfectly quiet'
psql db -f sql.sql &am...
How do I use itertools.groupby()?
... x[0] // chunk_size):
yield (g[1] for g in group)
with open('file.txt') as fobj:
for chunk in chunker(fobj):
process(chunk)
Another example of groupby - when the keys are not sorted. In the following example, items in xx are grouped by values in yy. In this case, one set of ...
How to create full compressed tar file using Python?
...directory)
with tarfile.open("save.tar.gz","w:gz"):
for file in ["a.txt","b.log","c.png"]:
tar.add(os.path.basename(file))
its use in tar.gz file compress in directory
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How to add NERDTree to your .vimrc
...im, run it like this from the command line:
$ vim -c "NERDTree" some_file.txt
You can set an alias for this in your .bashrc:
alias vimt='vim -c "NERDTree" $1'
Now whenever you run vimt (instead of vim) you'll also open up NERDTree on the left side of the window.
You could also add a shortcut ...
How is the Linux kernel tested ?
...t. Must be running built kernel already. See also: Documentation/kselftest.txt , https://kselftest.wiki.kernel.org/
ktest under tools/testing/ktest. See also: http://elinux.org/Ktest , http://www.slideshare.net/satorutakeuchi18/kernel-auto-testbyktest
Static analysers section of make help, which con...
Is there any reason to use a synchronous XMLHttpRequest?
...
Edited: I realize you're just dumping txt from a lazy HN user, but a little time in phrasing it nicely is appreciated here on SO.
– Frank Krueger
Aug 4 '11 at 16:41
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How to split strings across multiple lines in CMake?
...re is no way to split a string literal across multiple lines in CMakeLists.txt files or in CMake scripts. If you include a newline within a string, there will be a literal newline in the string itself.
# Don't do this, it won't work, MYPROJ_VERSION will contain newline characters:
set(MYPROJ_VERSIO...