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android on Text Change Listener
... how to detect after all field changed, because, it detect every time it changes, when any button is pressed.
– Rafael Guimarães
Oct 31 '19 at 1:41
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How to split a string with any whitespace chars as delimiters
...Anarelle it repeats the space character capture at least once, and as many time as possible: see https://regex101.com/r/dT7wG9/1 or http://rick.measham.id.au/paste/explain.pl?regex=\s%2B or http://regexper.com/#^s%2B or http://www.myezapp.com/apps/dev/regexp/show.ws?regex=\s+&env=env_java
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How to convert a string Date to long millseconds
...y");
try {
Date d = f.parse(string_date);
long milliseconds = d.getTime();
} catch (ParseException e) {
e.printStackTrace();
}
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Split string on the first white space occurrence
...smart because I have always considered this as a defect. This is the first time I am seeing this is taken advantage of :)
– Gogol
May 9 '18 at 11:00
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Conceptually, how does replay work in a game?
...bers). Since many games will update the game state based on the amount of time that passes between frames, you may also need to store the length of each frame.
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Convert a Map to a POJO
...Value is the right answer, but don't create an ObjectMapper instance every time. It's expensive to create and thread-safe, so create one and cache it somewhere.
– glade
Feb 26 '17 at 23:06
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Why would an Enum implement an Interface?
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First time ever seeing that Enum syntax (with the curly braces after the members), and I've been programming with Java for 6 years. TIL.
– jrahhali
Aug 29 '19 at 23:44
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How does the Java 'for each' loop work?
...ment primitive-int array (A is iterator, B is index):
[C:\java_code\]java TimeIteratorVsIndexIntArray 1000000
Test A: 358,597,622 nanoseconds
Test B: 269,167,681 nanoseconds
B faster by 89,429,941 nanoseconds (24.438799231635727% faster)
[C:\java_code\]java TimeIteratorVsIndexIntArray 1000000
Test...
What is a columnar database?
... (blocks ) needs to be brought to main memory, which includes lots of seek time from disk to bring all block from disk to ram, even if you are interested only in column which helps you to provide sales report. Whereas in column oriented scheme columns are stored contiguously in the blocks, which mak...
Get cookie by name
.... pop), and repeat the same process, but now with ";" as a token, but this time pulling out the left string (i.e. shift) to get the actual token value.
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