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What is the difference between Raising Exceptions vs Throwing Exceptions in Ruby?
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3 Answers
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How to save as a new file and keep working on the original one in Vim?
... the open file.
– loevborg
Nov 21 '13 at 13:04
2
@Ioevborg when is that not the case? I just :w f...
How to read environment variables in Scala
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Since Scala 2.9 you can use sys.env for the same effect:
scala> sys.env("HOME")
res0: Strin...
How to get a random number in Ruby
... them with:
10.times.map{ 20 + Random.rand(11) }
#=> [26, 26, 22, 20, 30, 26, 23, 23, 25, 22]
Note:
Using Random.new.rand(20..30) (using Random.new) generally would not be a good idea, as explained in detail (again) by Marc-André Lafortune, in his answer (again).
But if you don't use Rand...
How to get multiple select box values using jQuery?
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How to Pass Parameters to Activator.CreateInstance()
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Running a cron job at 2:30 AM everyday
How to configure a cron job to run every night at 2:30? I know how to make it run at 2, but not 2:30.
6 Answers
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PostgreSQL function for last inserted ID
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( tl;dr : goto option 3: INSERT with RETURNING )
Recall that in postgresql there is no "id" concept for tables, just sequences (which are typically but not necessarily used as default values for surrogate primary keys, with the SERIAL pseudo-type...
CSS Input Type Selectors - Possible to have an “or” or “not” syntax?
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183
CSS3 has a pseudo-class called :not()
input:not([type='checkbox']) {
visibility: h...
What does Python's eval() do?
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283
The eval function lets a Python program run Python code within itself.
eval example (interactiv...