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How should you build your database from source control?
...ng objects from a stable, finalized test environment?
Automation for both. Do NOT copy data between the environments
How do you deal with potential differences between test and production environments in deployment scripts?
Use templates, so that actually you would produce different set of scripts f...
How to pass parameters in GET requests with jQuery
...uld I be passing query string values in a jQuery Ajax request? I currently do them as follows but I'm sure there is a cleaner way that does not require me to encode manually.
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What specific productivity gains do Vim/Emacs provide over GUI text editors?
...e months now (for editing configuration files while in my terminal), but I don't think I could stand it for my normal, every day work of writing web applications, which I do with a GUI text editor (which one isn't important).
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How do I undo the most recent local commits in Git?
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Undo a commit and redo
$ git commit -m "Something terribly misguided" # (1)
$ git reset HEAD~ # (2)
<< edit files as necessary >> # (...
Trying to embed newline in a variable in bash [duplicate]
... characters "\n" as a new line.
var="a b c"
first_loop=true
for i in $var
do
p="$p\n$i" # Append
unset first_loop
done
echo -e "$p" # Use -e
Avoid extra leading newline
var="a b c"
first_loop=1
for i in $var
do
(( $first_loop )) && # "((...))" is bash spe...
How do you roll back (reset) a Git repository to a particular commit? [duplicate]
... state so that the remote repository also points to the rolled back commit do: git push <reponame> -f (credited user)
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How to express a NOT IN query with ActiveRecord/Rails?
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@NewAlexandria is right, so you'd have to do something like Topic.where('id NOT IN (?)', (actions.empty? ? '', actions). It would still break on nil, but I find that the array you pass in is usually generated by a filter that will return [] at the very least and neve...
Postgres: INSERT if does not exist already
...nd, also known as an ON CONFLICT clause to INSERT:
INSERT ... ON CONFLICT DO NOTHING/UPDATE
It solves many of the subtle problems you can run into when using concurrent operation, which some other answers propose.
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Calling the base constructor in C#
...nstructor of the inherited class to the constructor of the base class, how do I do that?
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How do I trigger the success callback on a model.save()?
...the server which handles the save, but the success callback is not fired. Do I need to send something back from the server ?
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