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dplyr: “Error in n(): function should not be called directly”
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edited Jan 27 '15 at 0:44
Michael Bellhouse
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Declare slice or make slice?
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95
In addition to fabriziom's answer, you can see more examples at "Go Slices: usage and internals"...
Boolean literals in PowerShell
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JoeyJoey
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add a...
Transform DateTime into simple Date in Ruby on Rails
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answered Jul 10 '09 at 16:57
Ryan McGearyRyan McGeary
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Passing route control with optional parameter after root in express?
... Ernesto BadilloErnesto Badillo
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Minimum and maximum date
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From the spec, §15.9.1.1:
A Date object contains a Number indicating a particular instant in time to within a millisecond. Such a Number is called a time value. A time value may also be NaN, indicating that the Date object does not represent...
An “and” operator for an “if” statement in Bash
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265
What you have should work, unless ${STATUS} is empty. It would probably be better to do:
if ! ...
Regular expression to limit number of characters to 10
... options are:
{3} Exactly 3 occurrences;
{6,} At least 6 occurrences;
{2,5} 2 to 5 occurrences.
See the regular expression reference.
Your expression had a + after the closing curly brace, hence the error.
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“x not in y” or “not x in y”
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answered Jan 5 '12 at 6:45
BenBen
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initialize a vector to zeros C++/C++11
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225
You don't need initialization lists for that:
std::vector<int> vector1(length, 0);
std::v...