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Mathematical functions in Swift
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@noilly: kinda late now, you have to set the file type to iOS in the Playground's file properties (Cmd-Opt-0), or import UIKit instead, per above comment
– Chris Conover
Sep 29 '14 at 21:35
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StringBuilder vs String concatenation in toString() in Java
...ion, it will be because it is not worth it. In 99% of cases, the compiler knows better which optimization is worth it, so as a rule of thumb the dev should not interfere. Of course, your situation may fall into the other 1%, but that can only be checked by (careful) benchmarking.
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What's the shebang/hashbang (#!) in Facebook and new Twitter URLs for?
...ve just noticed that the long, convoluted Facebook URLs that we're used to now look like this:
7 Answers
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How to download a branch with git?
...t and git has improved since then. My usual workflow is a little different now.
If I want to fetch the remote branches, I simply run:
git pull
This will fetch all of the remote branches and merge the current branch. It will display an output that looks something like this:
From github.com:andre...
How can I recognize touch events using jQuery in Safari for iPad? Is it possible?
...tically passed to the handler. For the safari browser (and android too) it now contains an array of all the touches the user has made on the screen. Each touch has its own properties (x,y coords for example)
– David Pean
Jan 21 '11 at 6:05
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What is the maximum size of a web browser's cookie's key?
...ookies of 2045 bytes, etc.
I used to say 4095 bytes due to IE7, however now Mobile Safari comes in with 4096 bytes with a 3 byte overhead per cookie, so 4093 bytes max.
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Equivalent of LIMIT and OFFSET for SQL Server?
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Old now. Sql Server 2012 and later support OFFSET/FETCH
– Joel Coehoorn
Sep 17 '13 at 3:06
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Solr vs. ElasticSearch [closed]
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Update
Now that the question scope has been corrected, I might add something in this regard as well:
There are many comparisons between Apache Solr and ElasticSearch available, so I'll reference those I found most useful myself, i....
What's the correct way to communicate between controllers in AngularJS?
... in this answer have been resolved in angular.js version 1.2.7. $broadcast now avoids bubbling over unregistered scopes and runs just as fast as $emit.
So, now you can:
use $broadcast from the $rootScope
listen using $on from the local $scope that needs to know about the event
Original Answe...
parseInt vs unary plus, when to use which?
...er for a more complete set of cases
Well, here are a few differences I know of:
An empty string "" evaluates to a 0, while parseInt evaluates it to NaN. IMO, a blank string should be a NaN.
+'' === 0; //true
isNaN(parseInt('',10)); //true
The unary + acts more like parseFloat ...