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What is the difference between Scala's case class and class?
...case Node(left, EmptyLeaf) => println("Can be reduced to "+left)
case _ => println(treeA+" cannot be reduced")
}
// Pattern matches can be safely done, because the compiler warns about
// non-exaustive matches:
def checkTree(t: Tree) = t match {
case Node(EmptyLeaf, Node(left, right)) =&g...
UITextField text change event
...
Add _ before textField in textFieldDidChange like this: func textFieldDidChange(textField: UITextField) { ... }
– Makalele
Jan 2 '17 at 23:32
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Multiple line code example in Javadoc comment
...ls to parse it correctly:( At least this is what I see with Oracle JDK1.7.0_45 javadoc implementation.
– Male
Jan 3 '14 at 16:14
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show 6 mo...
How do I sort an NSMutableArray with custom objects in it?
...OrderedSame, however in my code I though an exception.
NSArray *sorted = [_scores sortedArrayUsingComparator:^(id obj1, id obj2){
if ([obj1 isKindOfClass:[Score class]] && [obj2 isKindOfClass:[Score class]]) {
Score *s1 = obj1;
Score *s2 = obj2;
if (s1.points &g...
Generating a unique machine id
...search I decided the best would be to read MachineGuid in registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography, as @Agnus suggested. It is generated during OS installation and won't change unless you make another fresh OS install. Depending on the OS version it may contain the network ada...
NoSQL (MongoDB) vs Lucene (or Solr) as your database
...ommits. Refer to the latest document https://lucene.apache.org/solr/guide/8_5/
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What is CDATA in HTML? [duplicate]
...want a HTML/XML you can use XHTML5. FYI: en.wikipedia.org/wiki/HTML5#XHTML5_(XML-serialized_HTML5)
– Daniel De León
Dec 31 '17 at 19:53
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s...
Why is “copy and paste” of code dangerous? [closed]
...code is the one I want to use as my source?"
"Hmmm, what do all these 'util_func_023' functions do? Didn't I document them? Which of them do I need now?"
"Oh, yeah, this code uses Code Base Y. Guess I need to [choose one: copy all of Code Base Y into my new project / spend a day extricating the one ...
When to use volatile with multi threading?
...n mechanism. To get synchronization, use atomic, a
mutex, or a condition_variable.
[/End update]
The above all applies the the C++ language itself, as defined by the 2003 Standard (and now the 2011 Standard). Some specific platforms however do add additional functionality or restrictions to w...
How to use UTF-8 in resource properties with ResourceBundle
...XXX format. The below example converts a UTF-8 encoded properties file text_utf8.properties to a valid ISO-8859-1 encoded properties file text.properties.
native2ascii -encoding UTF-8 text_utf8.properties text.properties
When using a sane IDE such as Eclipse, this is already automatically done whe...