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The differences between .build, .create, and .create! and when should they be used?
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In Rails 4, I just checked in console. wall.posts.new and wall.posts.build are both populating the wall object in exactly same way. Means a...
Embedding SVG into ReactJS
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answered May 1 '14 at 17:41
Sophie AlpertSophie Alpert
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How to invert a grep expression
... Anja IshmukhametovaAnja Ishmukhametova
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Variable interpolation in the shell
...99 6.97997 49.672 6.73443 49.672 5.93063C49.672 5.22043 48.9832 4.61182 48.1414 4.61182C47.4335 4.61182 46.7256 4.91628 46.0943 5.50789C45.7307 4.9328 45.2525 4.66231 44.6595 4.66231C43.6264 4.66231 43.1481 5.28821 43.1481 6.59048V11.9512C43.1481 13.2535 43.6264 13.8962 44.6595 13.8962C45.6924 13.89...
What does “all” stand for in a makefile?
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P ShvedP Shved
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Multiple columns index when using the declarative ORM extension of sqlalchemy
...gs works fine
– yorjo
Jul 12 '11 at 14:57
6
What happens if you have a dictionary for table_args ...
How do you exit from a void function in C++?
... Stephen CaldwellStephen Caldwell
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How to zero pad a sequence of integers in bash so that all have the same width?
...o $i
done
will produce the following output:
00010
00011
00012
00013
00014
00015
More generally, bash has printf as a built-in so you can pad output with zeroes as follows:
$ i=99
$ printf "%05d\n" $i
00099
You can use the -v flag to store the output in another variable:
$ i=99
$ printf -v ...
How do I use a file grep comparison inside a bash if/else statement?
...q
– Reinstate Monica Please
Oct 23 '14 at 22:58
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jQuery: Adding two attributes via the .attr(); method
.... }... Don't the keys need to be in quotes?
– Gcamara14
Dec 28 '19 at 0:12
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