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What database does Google use?
Is it Oracle or MySQL or something they have built themselves?
8 Answers
8
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My Git repository is in the wrong root directory. Can I move it? (../ instead of ./)
...or so ago I ran the command in the directory one directory higher than the root of my project.
9 Answers
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Rails.env vs RAILS_ENV
...ewise, you can use RAILS_DEFAULT_LOGGER to get the current logger or RAILS_ROOT to get the path to the root folder.
Starting from Rails 2.x, Rails introduced the Rails module with some special methods:
Rails.root
Rails.env
Rails.logger
This isn't just a cosmetic change. The Rails module offers ...
How to get the filename without the extension from a path in Python?
...our own with:
>>> import os
>>> base=os.path.basename('/root/dir/sub/file.ext')
>>> base
'file.ext'
>>> os.path.splitext(base)
('file', '.ext')
>>> os.path.splitext(base)[0]
'file'
Important note: If there is more than one . in the filename, only the l...
Merge two Git repositories without breaking file history
...-histories branchfromsecondrepo
Your repository will have more than one root commit, but that shouldn't pose a problem.
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How to format a java.sql Timestamp for displaying?
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If you're using MySQL and want the database itself to perform the conversion, use this:
DATE_FORMAT(date,format)
If you prefer to format using Java, use this:
java.text.SimpleDateFormat
SimpleDateFormat dateFormat = new SimpleDateFormat(...
Why historically do people use 255 not 256 for database field magnitudes?
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255 was the varchar limit in mySQL4 and earlier.
Also 255 chars + Null terminator = 256
Or 1 byte length descriptor gives a possible range 0-255 chars
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What should be in my .gitignore for an Android Studio project?
...uction
*.iws
*.ipr
*~
*.swp
This file should be located in the project's root folder and not inside the project's module folder.
Edit Notes:
Since version 0.3+ it seems you can commit and push *.iml and build.gradle files. If your project is based on Gradle: in the new open/import dialog, you s...
Java: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification
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this hasn't worked for me. I have the root and the chain cert installed, but Tomcat-7 still reports validatorException caused by "unable to find valid certification path to requested target" any way to debug this?
– Cheruvim
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More elegant “ps aux | grep -v grep”
...)
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1902 0.0 0.1 82560 3580 ? Ss Oct20 0:00 /usr/sbin/sshd -D
$ ps up $(pgrep -f sshddd)
error: list of process IDs must follow p
[stderr output truncated]
$ ps up $(pgrep -f sshddd) 2>&-
[no out...