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How to check if the user can go back in browser history or not
...page website
– Dan
Mar 26 '13 at 13:05
37
Does not work if a window was opened with target="_blan...
What is the difference between old style and new style classes in Python?
...o the concept of type:
if x is an instance of an old-style class, then x.__class__
designates the class of x, but type(x) is always <type
'instance'>.
This reflects the fact that all old-style instances, independently of
their class, are implemented with a single built-in type, c...
Argparse optional positional arguments?
..., all command-line args present are gathered into a list. Additionally, an error message will be generated if there wasn’t at least one command-line argument present.
parser.add_argument('dir', nargs=argparse.REMAINDER, default=os.getcwd())
argparse.REMAINDER. All the remaining command-line ar...
Multiprocessing vs Threading Python [duplicate]
...n3
import multiprocessing
import threading
import time
import sys
def cpu_func(result, niters):
'''
A useless CPU bound function.
'''
for i in range(niters):
result = (result * result * i + 2 * result * i * i + 3) % 10000000
return result
class CpuThread(threading.Thre...
What does multicore assembly language look like?
...els in the wild that boot from USB drives or "floppy" disks - here's an x86_32 version written in assembler using the old TSS descriptors that can actually run multi-threaded C code (github.com/duanev/oz-x86-32-asm-003) but there is no standard library support. Quite a bit more than you asked for b...
Find and copy files
...should be escaped before press the enter button. Otherwise you will get an error something like this
find: missing argument to `-exec'
In your case, copy command syntax is wrong in order to copy find file into /home/shantanu/tosend. The following command will work:
find /home/shantanu/processed...
Set cache-control for entire S3 bucket automatically (using bucket policies?)
...y are case sensitive and must be entered accurately
or you'll keep getting errors about invalid signatures or similar.
Remember to add s3:ListAllMyBuckets permissions to the keys or you will get an AccessDenied error while testing access.)
./s3cmd --recursive modify --add-header="Cache-Control:publi...
Dots in URL causes 404 with ASP.NET mvc and IIS
... allowed me to catch the url /WEB-INF./web.xml and redirect it to a custom error page when very many other ways I tried did not work.
– quentin-starin
Oct 9 '13 at 15:58
3
...
brew install mysql on macOS
... per user Sedorner from this StackOverflow answer
brew doctor and fix any errors
brew remove mysql
brew cleanup
brew update
brew install mysql
unset TMPDIR
mysql_install_db --verbose --user=`whoami` --basedir="$(brew --prefix mysql)" --datadir=/usr/local/var/mysql --tmpdir=/tmp # whoami is e...
Adding git branch on the Bash command prompt
...
git 1.9.3 or later: use __git_ps1
Git provides a shell script called git-prompt.sh, which includes a function __git_ps1 that
prints text to add to bash PS1 prompt (includes branch name)
Its most basic usage is:
$ __git_ps1
(master)
It also...