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Remove blank lines with grep
... instance your regular expression matches the beginning of the string then one or more spaces using the POSIX standard then the end of the string, i.e. with grep -v it removes all lines that are only spaces. Right? What happens if there are no spaces; it's simply a newline character?
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How do I compile a Visual Studio project from the command-line?
...ution, test, and commit cycle for a large C++ solution that is using Monotone , CMake , Visual Studio Express 2008, and custom tests.
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How to add to an existing hash in Ruby
...=>"a"}
When it comes to "inserting" things into a Hash you may do it one at a time, or use the merge method to combine hashes:
{ :a => 'a' }.merge(:b => 'b')
# {:a=>'a',:b=>'b'}
Note that this does not alter the original hash, but instead returns a new one. If you want to combin...
belongs_to through associations
...unique index to the table (especially because validates_uniqueness_of is prone to race conditions).
If you're paranoid, add a custom validation to Choice that confirms that the answer's question_id matches, but it sounds like the end user should never be given the opportunity to submit data that wo...
Rails auto-assigning id that already exists
...e "company", and column name "id" ... please replace them with the correct ones. You can get the sequence name with SELECT pg_get_serial_sequence('tablename', 'columname'); or look at the table definition with \d tablename.
An alternate solution is to override the save() method in your company clas...
Bootstrap modal appearing under background
...r.
Make sure the modal container and all of its parent elements are positioned the default way to fix the problem.
Here are a couple ways to do this:
Easiest way is to just move the modal div so it is outside any elements with special positioning. One good place might be just before the closing...
Share variables between files in Node.js?
... an scenario where a global var is the best option, of course you can have one, but take a look at these examples and you may find a better way to accomplish the same:
Scenario 1: Put the stuff in config files
You need some value that it's the same across the application, but it changes depending ...
How to attribute a single commit to multiple developers?
...by others: https://git.wiki.kernel.org/index.php/CommitMessageConventions
One problem with this approach is that you can't create a signed key for this group of devs, so you could essentially add anybody to this list even if they didn't work on a feature and GitHub would treat it as if they did. Ho...
Edit line thickness of CSS 'underline' attribute
...
Here is one way of achieving this :
HTML :
<h4>This is a heading</h4>
<h4><u>This is another heading</u></h4>
CSS :
u {
text-decoration: none;
border-bottom: 10px solid black;
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Ignoring an already checked-in directory's contents?
...to hold graphics and sound files used in several projects. They are all in one directory without sub-directories. Now I just created a script to copy these assets over from another, structured directory, with several levels of sub-directories.
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