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Is there any Rails function to check if a partial exists?
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How to list all tags along with the full message in git?
I want git to list all tags along with the full annotation or commit message. Something like this is close:
8 Answers
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Check if two unordered lists are equal [duplicate]
...of (hashable) things, called a set. If you convert both lists to sets, the comparison will be unordered.
set(x) == set(y)
Documentation on set
EDIT: @mdwhatcott points out that you want to check for duplicates. set ignores these, so you need a similar data structure that also keeps track of th...
PostgreSQL - how to quickly drop a user with existing privileges
...ption of this.
Addition:
Apparently, trying to drop a user by using the commands mentioned here will only work if you are executing them while being connected to the same database that the original GRANTS were made from, as discussed here:
https://www.postgresql.org/message-id/83894A1821034948BA...
Placement of the asterisk in pointer declarations
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Whitespace is insignificant to a C compiler (ignoring the preprocessor). So no matter how many spaces there are or aren't between the asterisk and its surroundings, it has exactly the same meaning.
– ephemient
Oct 7 '08 ...
Different bash prompt for different vi editing mode?
... to have a prompt that depends on the mode you are currently in (insert or command). How does one find out this editing mode?
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How to define custom configuration variables in rails
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Update 1
Very recommended: I'm going with Rails Config gem nowadays for the fine grained control it provides.
Update2
If you want a quick solution, then check Jack Pratt's answer below.
Although my original answer below still works, this ...
How do I upgrade my ruby 1.9.2-p0 to the latest patch level using rvm?
...tall the new ruby version, just run rvm install 1.9.2 - and wait for it to compile!
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How can I match a string with a regex in Bash?
....tar.bz2 , .tar.gz etc. file it uses tar with the relevant switches to decompress the file.
6 Answers
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How do I concatenate const/literal strings in C?
... *strcat(char *dest, const char *src);
Here is an example from cplusplus.com:
char str[80];
strcpy(str, "these ");
strcat(str, "strings ");
strcat(str, "are ");
strcat(str, "concatenated.");
For the first parameter, you need to provide the destination buffer itself. The destination buffer must...