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How to check if a variable exists in a FreeMarker template?
...if it exists. I think that checking for existence and emptiness is a good idea in a lot of cases, and makes your template more robust and less prone to silly errors. In other words, if you check to make sure your variable is not null AND not empty before using it, then your template becomes more f...
How do I 'overwrite', rather than 'merge', a branch on another branch in Git?
... and flattens history. Not necessarily what you are after. Also not a good idea, if you are working with already-published history.
– knittl
Jun 5 '15 at 11:00
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Create Directory if it doesn't exist with Ruby
...d app would hide problems making maintenance harder. Also, its not a great idea to use exceptions as conditionals, in a hardware sense they run much much slower (likely not really an issue in a modern language but still makes you look inexperienced as a coder).
– Ed_
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How to install trusted CA certificate on Android device?
...d up, but older versions of the webview won't work like this. The general idea still works though - just download/open the file with a webview and then let the os take over. This may be an easier and more universal solution (in the actual java now):
public static void installTrustedRootCert( fina...
Rails: Adding an index after adding column
...ady in production, then removing it will delete real data, so that's a bad idea. If it is still in development, why not just revert and then edit the original migration? Or if you feel the need to leave the original migration code untouched, you could add comments mentioning the relationship betwee...
Update parent scope variable in AngularJS
...e.$parent.value will work in most cases, however it's usually not the best idea to use extensively as it can get hard to manage in larger, more complicated projects.
– Alex Johnson
Jun 12 '14 at 15:21
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Type List vs type ArrayList in Java [duplicate]
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I agree that it is usually not a good idea to have public methods receive or return concrete types like ArrayList. But @mazatwork also has a point with his "owner" definition. If the owner knows that the List has to be of a certain type then he has to insure that...
How to install grunt and how to build script with it
...your build process by following command:
grunt
I hope this give you an idea how to work with GruntJS build.
NOTE:
You can use grunt-init for creating Gruntfile.js if you want wizard-based creation instead of raw coding for step 5.
To do so, please follow these steps:
npm install -g grunt-...
Github: Import upstream branch into fork
...t local branch instead of allowing the creation of a new local branch. Any ideas?
– mMontu
Sep 6 '13 at 12:14
1
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What's the difference between git reflog and log?
...as only ever been one commit against the repo:
Back to the 'safety net' idea
Also, since the reflog keeps track of things you amended and commits you reset, it allows you to go back and find those commits because it'll give you the commit ids. Assuming your repository hasn't been purged of old c...