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Is a GUID unique 100% of the time?
...d GUID is not
guaranteed to be unique, the total
number of unique keys (2128 or
3.4×1038) is so large that the probability of the same number being
generated twice is very small. For
example, consider the observable
universe, which contains about 5×1022
stars; every star could then have
6.8×1015 ...
How to determine if a string is a number with C++?
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edited Dec 26 '19 at 8:48
user31264
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Getting the array length of a 2D array in Java
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184
Consider
public static void main(String[] args) {
int[][] foo = new int[][] {
new...
What is the difference between the | and || or operators?
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edited Jan 3 '18 at 3:35
Zze
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answered...
Check image width and height before upload with Javascript
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8 Answers
8
Active
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JavaScript for…in vs for
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548
The choice should be based on the which idiom is best understood.
An array is iterated using:
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Check if a Class Object is subclass of another Class Object in Java
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edited Mar 23 at 8:00
Joachim Sauer
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Copy files without overwrite
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38
For %F In ("C:\From\*.*") Do If Not Exist "C:\To\%~nxF" Copy "%F" "C:\To\%~nxF"
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how to create a Java Date object of midnight today and midnight tomorrow?
....MILLISECOND, 0);
// next day
date.add(Calendar.DAY_OF_MONTH, 1);
JDK 8 - java.time.LocalTime and java.time.LocalDate
LocalTime midnight = LocalTime.MIDNIGHT;
LocalDate today = LocalDate.now(ZoneId.of("Europe/Berlin"));
LocalDateTime todayMidnight = LocalDateTime.of(today, midnight);
LocalDate...
Override Java System.currentTimeMillis for testing time sensitive code
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Jon SkeetJon Skeet
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