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What causes javac to issue the “uses unchecked or unsafe operations” warning
...yList<String>();
In Java 7 you can shorten generic instantiation by using Type Inference.
List<String> myList = new ArrayList<>();
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Do you need break in switch when return is used?
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no point, since return clearly exists by it self on execution =) Less code is better.
– EMC
Jun 13 '11 at 12:17
7
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Appropriate hashbang for Node.js scripts
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If your script is intended for use by Node developers, you should absolutely just use
#!/usr/bin/env node
and not bother trying for compatibility with people who only have Node installed as nodejs.
Rationale:
It's what the cool kids are doing, and if you...
Disable developer mode extensions pop up in Chrome
...sions, check Developer mode and click Pack extension
Install the extension by dragging and dropping the .crx file into the chrome://extensions page.
You'll get an "Unsupported extensions disabled" popup if you try restarting Chrome at this point.
Then for Windows 7 or Windows 8:
Download Chrome...
Using Phonegap for Native Application development [closed]
...ased features you're not using
The accelerometer, geolocation features are by default turned on. If you're not using them, I would turn them off, as your app will load faster (initialize) and run smoother.
onDeviceReady - This is the method that's called once phonegap has loaded and is ready. $...
How do I get ruby to print a full backtrace instead of a truncated one?
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Exception#backtrace has the entire stack in it:
def do_division_by_zero; 5 / 0; end
begin
do_division_by_zero
rescue => exception
puts exception.backtrace
raise # always reraise
end
(Inspired by Peter Cooper's Ruby Inside blog)
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Python: using a recursive algorithm as a generator
... permutation
flatten allows us to continue progress in another generator by simply yielding it, instead of iterating through it and yielding each item manually.
Python 3.3 will add yield from to the syntax, which allows for natural delegation to a sub-generator:
def getPermutations(string, pre...
How to indicate param is optional using inline JSDoc?
...h, otherwise the argument won't be marked as optional (even if it preceded by already optional arguments):
function demo(
/** @type {String} */ mandatory,
/** @type {Number} */ optional1 = 0,
/** @type {Number} optional2 = undefined,
)
If you hover over demo in your IDE you should see both ...
Download a single folder or directory from a GitHub repo
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Update Sep. 2016: there are a few tools created by the community that can do this for you:
GitZip (Credits to Kino - upvote his answer right here!)
DownGit (Credits to Minhas Kamal - upvote his answer right here!)
Git doesn't support this, but Github does via SVN. If...
How do you get a timestamp in JavaScript?
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While +new Data is clever, it isn't readable by other devs. Date.now() is clearer and ensures everyone else knows what's going on.
– Harry Sadler
Mar 29 '17 at 19:06
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