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What is the difference between PS1 and PROMPT_COMMAND
...ses both PROMPT_COMMAND and PS1. The bash code in PROMPT_COMMAND works out what git branch you might be in and displays that at the prompt, along with the exit status of the last run process, hostname and basename of the pwd. The variable RET stores the return value of the last executed program. Thi...
How to use enums as flags in C++?
...ating enum s as flags works nicely in C# via the [Flags] attribute, but what's the best way to do this in C++?
22 Answer...
Can I create a One-Time-Use Function in a Script or Stored Procedure?
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Common Table Expressions let you define what are essentially views that last only within the scope of your select, insert, update and delete statements. Depending on what you need to do they can be terribly useful.
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Modern way to filter STL container?
Coming back to C++ after years of C# I was wondering what the modern - read: C++11 - way of filtering an array would be, i.e. how can we achieve something similar to this Linq query:
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Rails 3 - can't install pg gem
.../PostgreSQL/9.1/bin/pg_config for 9.1.x) and the development headers. It's what I use to test the pg gem in development.
– Michael Granger
Mar 12 '12 at 23:53
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Method chaining - why is it a good practice, or not?
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I know what you mean, Vilx. But yet when I read list.add(someItem), I read that as "this code is adding someItem to the list object". so when I read PizzaBuilder.AddSauce(), I read this naturally as "this code is adding sauce to the...
How to read from a file or STDIN in Bash?
...y, ${1:--} is POSIX-compliant, so it should work in all POSIX-like shells. What won't work in all such shells is process substitution (<(...)); it'll work in bash, ksh, zsh, but not in dash, for instance. Also, better to add -r to your read command, so that it doesn't accidentally eat \ chars; p...
Git stash pop- needs merge, unable to refresh index
...t stash pop
help/C/scan-remote.page: needs merge
unable to refresh index
What you did was to fix the merge conflict (editing the right file, and committing it):
See "How do I fix merge conflicts in Git?"
What the blog post's author did was:
julita@yulys:~/GNOME/baobab/help/C$ git reset --hard or...
Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
... is generally safer to use. But it is not portable - POSIX doesn't specify what it does and only some shells support it (beside bash, I heard ksh supports it too). For example, you can do
[[ -e $b ]]
to test whether a file exists. But with [, you have to quote $b, because it splits the argument ...
How to continue a task when Fabric receives an error
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Just tested on 1.9.0 too. What is your output when you try the example code from my updated comment?
– Chris Marinos
Jul 15 '14 at 13:33
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