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Why compile Python code?
... would you compile a Python script? You can run them directly from the .py file and it works fine, so is there a performance advantage or something?
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How to make a variadic macro (variable number of arguments)
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Actually g++ will compile C99 macros in C++ files. It will issue a warning, however, if compiled with '-pedantic'.
– Alex B
Mar 25 '09 at 2:24
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SVN encrypted password store
...achieve non-repudiation (other users could use your hash as you) due to OS file permissions. However, most companies have subversion setup using their domain password or some form of SSO password. By encrypting the password, you would at least mask someone from accessing a users other accounts.
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How to empty a redis database?
... want to add one more option (requires downtime):
Stop Redis.
Delete RDB file (find location in redis.conf).
Start Redis.
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use Winmerge inside of Git to file diff
...part of your PATH:
#!/bin/sh
echo Launching WinMergeU.exe: $1 $2
"$PROGRAMFILES/WinMerge/WinMergeU.exe" -e -u -dl "Local" -dr "Remote" "$1" "$2"
(see WinMerge Command-line options)
git difftool
will now launch WinMerge.
If you want git diff to launch WinMerge, just set:
set GIT_EXTERNAL_DIF...
Running a cron job at 2:30 AM everyday
... new crontab
"/tmp/crontab.tNt1NL/crontab":7: bad minute
errors in crontab file, can't install.
Do you want to retry the same edit? (y/n)
If you have further problems with crontab not running you can check Debugging crontab or Why is crontab not executing my PHP script?.
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Git: How to update/checkout a single file from remote origin master?
... the deployed repository)
git fetch
git checkout origin/master -- path/to/file
The fetch will download all the recent changes, but it will not put it in your current checked out code (working area).
The checkout will update the working tree with the particular file from the downloaded changes (o...
Batch files: How to read a file?
How you can read a file (text or binary) from a batch file? There is a way to read it in a binary mode or text mode?
7 Answ...
Shell script to send email [duplicate]
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$ echo "hello world" | mail -s "a subject" -a "attachment file" someone@somewhere.com for sending files
– Saurabh Saxena
Feb 18 '13 at 7:45
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How Do I Use Factory Girl To Generate A Paperclip Attachment?
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You can use fixture_file_upload
include ActionDispatch::TestProcess in your test helper, here is an example factory:
include ActionDispatch::TestProcess
FactoryBot.define do
factory :user do
avatar { fixture_file_upload(Rails.root.join(...