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Using Default Arguments in a Function
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About the performance, a very simple test shows that using the Reflection API to get the default parameters makes the function call 25 times slower, while it still takes less than one microsecond. You should know if you can to live with that.
Of course, if you mean to use it in a loop, you should g...
Sending command line arguments to npm script
...lobally, containing command line parameter values, but this is a low-level API (whitespace-separated array of strings, as provided by the operating system to the node executable).
Edit 2013.10.03: It's not currently possible directly. But there's a related GitHub issue opened on npm to implement...
Google Guava isNullOrEmpty for collections
... use .isEmpty() like normal. Do this immediately upon calling the naughty API and you've put the weirdness behind you, instead of letting it continue on indefinitely.
And if the "null which really means empty collection" is not being returned to you, but passed to you, your job is easy: just let a...
Simplest way to wait some asynchronous tasks complete, in Javascript?
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@MuhammadUmer Lots of detail at bluebirdjs.com/docs/api/promise.promisifyall.html
– Nate
Mar 21 '16 at 19:17
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Best way to serialize an NSData into a hexadeximal string
... important to take the energy to serialize it without piggy-backing off an API that is meant for something else other than data serialization.
@implementation NSData (Hex)
- (NSString*)hexString
{
NSUInteger length = self.length;
unichar* hexChars = (unichar*)malloc(sizeof(unichar) * (leng...
How to convert an Array to a Set in Java
...;T>(Arrays.asList(someArray)). See google.github.io/guava/releases/19.0/api/docs/com/google/common/…
– Alexander Klimetschek
Nov 11 '16 at 1:51
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What is this: [Ljava.lang.Object;?
...ct) and then reflecting on the returned Class object. Ideally, though, the API should've been designed such that reflection is not necessary (see Effective Java 2nd Edition, Item 53: Prefer interfaces to reflection).
On a more "useful" toString for arrays
java.util.Arrays provides toString overl...
Base64 length calculation?
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Does not work as an input for window's API CryptBinaryToStringA.
– TarmoPikaro
May 4 '16 at 6:54
1
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Rails 3 datatypes?
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and :references for polymorphic associations. See: api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/…
– Ethan
Jan 25 '12 at 8:46
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How to detect total available/free disk space on the iPhone/iPad device?
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UPDATE: Since a lot of time has passed after this answer and new methods/APIs have been added, please check the updated answers below for Swift etc; Since I've not used them myself, I can't vouch for them.
Original answer:
I found the following solution working for me:
-(uint64_t)getFreeDiskspac...