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Getting “unixtime” in Java
...The Java 32-bit int matches 32-bit platforms (and the year 2038 problem). 64-bit platforms use a larger time_t data type. Java dodged that bullet by using a long as the return for System.currentTimeMillis(). If you convert to int, you're re-introducing the year 2038 problem. See en.wikipedia.org...
Bash Templating: How to build configuration files from templates with Bash?
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You can use this:
perl -p -i -e 's/\$\{([^}]+)\}/defined $ENV{$1} ? $ENV{$1} : $&/eg' <...
Set font-weight using Bootstrap classes
...Title fields in order to emphasize them when necessary. Tested in Windows x64 in Chrome ver76 and IE11.
– timmi4sa
Sep 8 '19 at 19:36
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How does free know how much to free?
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When you call malloc(), you specify the amount of memory to allocate. The amount of memory actu...
Simplest code for array intersection in javascript
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If your environment supports ECMAScript 6 Set, one simple and supposedly efficient (see specifi...
Render HTML to an image
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@Subho it's a String containing the URL with base64-encoded data
– tsayen
Feb 14 '17 at 16:00
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Get all non-unique values (i.e.: duplicate/more than one occurrence) in an array
...is for similar type of case.
Reference: https://stackoverflow.com/a/57532964/8119511
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What uses are there for “placement new”?
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We use it with custom memory pools. Just a sketch:
class Pool {
public:
Pool() { /* implem...
How to flush output of print function?
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With Python 3.x the print() function has been extended:
print(*objects, sep=' ', end='\n', fil...
Why does Java's hashCode() in String use 31 as a multiplier?
...value of -31 would have been better, and I would think something like -83 (64+16+2+1) might have been better yet (blenderize bits somewhat better).
– supercat
Mar 27 '14 at 22:02
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