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What does ||= (or-equals) mean in Ruby?
...threads on the Ruby mailing-list whose only purpose is to collect links to all the other threads on the Ruby mailing-list that discuss this issue.
Here's one: The definitive list of ||= (OR Equal) threads and pages
If you really want to know what is going on, take a look at Section 11.4.2.3 "Abbrevi...
How to access parent scope from within a custom directive *with own scope* in AngularJS?
...quire, passing in variables (or the scope itself) from above, etc. I'm totally willing to bend over backwards, but I want to avoid something totally hacky or unmaintainable. For example, I know I could do it right now by taking the $scope from the preLink parameters and iterating over it's $sib...
Uninstall old versions of Ruby gems
...
# remove all old versions of the gem
gem cleanup rjb
# choose which ones you want to remove
gem uninstall rjb
# remove version 1.1.9 only
gem uninstall rjb --version 1.1.9
# remove all versions less than 1.3.4
gem uninstall rjb --v...
ANTLR: Is there a simple example?
...r, and evaluator using ANTLR4.
You first create a grammar. Below is a small grammar that you can use to evaluate expressions that are built using the 4 basic math operators: +, -, * and /. You can also group expressions using parenthesis.
Note that this grammar is just a very basic one: it does ...
How can I define colors as variables in CSS?
...les, so that I can just change a variable to have the new color applied to all elements that use it?
19 Answers
...
Nginx location priority
...th the "=" prefix that match the query exactly. If found, searching stops.
All remaining directives with conventional strings. If this match used the "^~" prefix, searching stops.
Regular expressions, in the order they are defined in the configuration file.
If #3 yielded a match, that result is used...
List of ANSI color escape sequences
...cape sequences you're looking for are the Select Graphic Rendition subset. All of these have the form
\033[XXXm
where XXX is a series of semicolon-separated parameters.
To say, make text red, bold, and underlined (we'll discuss many other options below) in C you might write:
printf("\033[31;1;4mHel...
C char array initialization
...he question, it's worth pointing out that the C standard requires any partially-complete array initialisation to be padded with zero for the remaining elements (by the compiler). This goes for all data types, not just char.
– paddy
Sep 8 '13 at 21:54
...
How can I restart a Java application?
...new ProcessBuilder(command);
builder.start();
System.exit(0);
}
Basically it does the following:
Find the java executable (I used the java binary here, but that depends on your requirements)
Find the application (a jar in my case, using the MyClassInTheJar class to find the jar location itse...
How do you specify a different port number in SQL Management Studio?
...
@mark Agreed, but it should be no surprise really - this is the same company that ignored the rest of the world and decided to use backslashes in file paths. sigh
– Scott
Jan 9 '13 at 15:31
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