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How to specify function types for void (not Void) methods in Java8?
...could simply create a consumer for that with a lambda expression:
List<String> allJedi = asList("Luke","Obiwan","Quigon");
allJedi.forEach( jedi -> System.out.println(jedi) );
You can see above that in this case, the lambda expression receives a parameter and has no return value.
Now, i...
What is the difference between bindParam and bindValue?
...le. The main reason for using bindValue would be static data, e.g. literal strings or numbers.
– lonesomeday
Jul 17 '13 at 20:53
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Display an array in a readable/hierarchical format
...at you can pass true as the second parameter to print_r to get the data as string. Now you can return '<pre>'.print_r(User::all(), true); from your routes file.
– DutGRIFF
Nov 5 '14 at 19:43
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In Django, how does one filter a QuerySet with dynamic field lookups?
...
Just a quick gotcha heads-up: make sure the strings in the kwargs are of type str not unicode, else filter() will grumble.
– Steve Jalim
Apr 4 '11 at 9:30
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How do I “git blame” a deleted line?
...w the contents of the line, this is an ideal use case for:
git log -S <string> path/to/file
which shows you commits which introduce or remove an instance of that string. There's also the -G<regex> which does the same thing with regular expressions! See man git-log and search for the -...
Memory address of variables in Java
...ects may/will move around during garbage collection etc.)
Integer.toBinaryString() will give you an integer in binary form.
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Disabling user selection in UIWebView
...}
</style>
Programmatically load the following Javascript code:
NSString * jsCallBack = @"window.getSelection().removeAllRanges();";
[webView stringByEvaluatingJavaScriptFromString:jsCallBack];
Disable the Copy / Paste user menu:
- (BOOL)canPerformAction:(SEL)action withSender:(id)se...
Delete all files in directory (but not directory) - one liner solution
...
public class DeleteFile {
public static void main(String[] args) {
String path="D:\test";
File file = new File(path);
File[] files = file.listFiles();
for (File f:files)
{if (f.isFile() && f.exists)
{ f.delete()...
What is the use of printStackTrace() method in Java?
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This is normal, with the 1st one you call the toString() of the error, and in the 2nd you ask to print all the stackTrace from the error. That's 2 différents things.
– Jon
May 17 '16 at 8:08
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What are the disadvantages to declaring Scala case classes?
...ically defined
Possible in any class by prefixing params with val
Decent toString() implementation
Yes, very useful, but doable by hand on any class if necessary
Compliant equals() and hashCode()
Combined with easy pattern-matching, this is the main reason that people use case classes
Companion obje...