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Create module variables in Ruby
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159
Ruby natively supports class variables in modules, so you can use class variables directly, an...
Why does “while(true)” without “Thread.sleep” cause 100% CPU usage on Linux but not on Windows?
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1 Answer
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Active
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How do I push a local Git branch to master branch in the remote?
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841
$ git push origin develop:master
or, more generally
$ git push <remote> <local branc...
Math.random() versus Random.nextInt(int)
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169
Here is the detailed explanation of why "Random.nextInt(n) is both more efficient and less bia...
Get yesterday's date using Date [duplicate]
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Update
There has been recent improvements in datetime API with JSR-310.
Instant now = Instant.now();
Instant yesterday = now.minus(1, ChronoUnit.DAYS);
System.out.println(now);
System.out.println(yesterday);
https://ideone.com/91M1eU
Outdated answer
You are subtracting the wrong number:...
What is the best way to concatenate two vectors?
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answered Jul 5 '10 at 4:39
Kirill V. LyadvinskyKirill V. Lyadvinsky
87.3k2222 gold badges125125 silver badges208208 bronze badges
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How do I change the UUID of a virtual disk?
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172
The correct command is the following one.
VBoxManage internalcommands sethduuid "/home/user/V...
Closing Hg Branches
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158
hg commit --close-branch
should be enough to mark a branch close. (see hg commit)
--close-b...
Iterating through a range of dates in Python
...date).days)):
yield start_date + timedelta(n)
start_date = date(2013, 1, 1)
end_date = date(2015, 6, 2)
for single_date in daterange(start_date, end_date):
print(single_date.strftime("%Y-%m-%d"))
NB: For consistency with the built-in range() function this iteration stops before reachin...
Position: absolute and parent height?
...hidden;
}
.one {
position: relative;
float: left;
margin-top: 10px;
margin-left: 10px;
background: red;
width: 30px;
height: 30px;
}
.two {
position: relative;
float: right;
margin-top: 10px;
margin-right: 10px;
background: blue;
width: 30px;
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