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What does the question mark and the colon (?: ternary operator) mean in objective-c?
...the left side is an expression, as the ?: prevents it from being evaluated more than once. For example: [myArray firstObject] ? [myArray firstObject] : @"Hello World"; calls firstObject twice (if firstObject does not return nil), where [myArray firstObject] ?: @"Hello World"; produces the identical...
How to make return key on iPhone make keyboard disappear?
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How to set dialog to show in full screen? [closed]
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What's the algorithm to calculate aspect ratio?
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Select multiple records based on list of Id's with linq
...r that answer. Actually it should be clear that joining the needed data is more efficient than comparing two lists by iterating again and again... But sometimes one needs time to get the idea and the correct syntax. Thank you for that ????
– Nadine
Aug 8 at 13:...
How can I get System variable value in Java?
...e in Java, see below:
String javaHome = System.getenv("JAVA_HOME");
For more information on environment variables see this wikipedia page.
Also make sure the environment variable you are trying to read is properly set before invoking Java by doing a:
echo %MYENVVAR%
You should see the value o...
JSON Stringify changes time of date because of UTC
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How to remove leading zeros from alphanumeric text?
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