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git: switch branch without detaching head
...main branch (master) and a branch for some experimental work. I made some commits and pushed to the experimental branch and everything was fine.
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Preserve line endings
...tion is made—as is the case for MS-DOS, Windows, Cygwin—text files are composed of lines separated by a carriage return and a line feed character, and sed does not see the ending CR. When this option is specified, sed will open input files in binary mode, thus not requesting this special process...
List files committed for a revision
How do I list the file names/paths that are committed, using a revision number?
3 Answers
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Is it a good idea to index datetime field in mysql?
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MySQL recommends using indexes for a variety of reasons including elimination of rows between conditions: http://dev.mysql.com/doc/refman/5.0/en/mysql-indexes.html
This makes your datetime column an excellent candidate for an index ...
str.startswith with a list of strings to test for
I'm trying to avoid using so many if statements and comparisons and simply use a list, but not sure how to use it with str.startswith :
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What is the most efficient way to store tags in a database?
...implies to me that you'll quite possibly need an intermediary table to overcome the many-to-many obstacle.
Something like:
Table: Items
Columns: Item_ID, Item_Title, Content
Table: Tags
Columns: Tag_ID, Tag_Title
Table: Items_Tags
Columns: Item_ID, Tag_ID
It might be that your web app is very ...
Rails: Check output of path helper from console
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Just in a follow up of my own comment, seems this is possible from rails 3 console, in case you're using. First, stick a fake request into your app object, by calling something like app.get "/" then just instance_eval the wanted methods, as they are no...
How to convert a ruby hash object to JSON?
... edited May 23 '17 at 12:34
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answered Jul 6 '10 at 6:40
Mladen JablanovićMla...
What is the relationship between the docker host OS and the container base image OS?
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Docker is a pretty complex project that leverage advance features. At some point, we assume the user has some knowledge like the difference between operating system and distribution. If you think it would add value, the documentation is open so...