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What's the state of the art in email validation for Rails?
...use a email validation without regexp using the Mail gem.
Here is my implementation (packaged as a gem).
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How to make a variadic macro (variable number of arguments)
I want to write a macro in C that accepts any number of parameters, not a specific number
5 Answers
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Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
Below is the error message I receive in the debug area. It runs fine and nothing is wrong except that I receive this error. Would this prevent apple accepting the app? How do I fix it?
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Virtual member call in a constructor
I'm getting a warning from ReSharper about a call to a virtual member from my objects constructor.
18 Answers
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Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
...larjs/
AngularJS does not allow duplicates in a ng-repeat directive. This means if you are trying to do the following, you will get an error.
// This code throws the error "Duplicates in a repeater are not allowed.
// Repeater: row in [1,1,1] key: number:1"
<div ng-repeat="row in [1,1,1]">
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Can I export a variable to the environment from a bash script without sourcing it?
... several possible workarounds.
The most obvious one, which you've already mentioned, is to use source or . to execute the script in the context of the calling shell:
$ cat set-vars1.sh
export FOO=BAR
$ . set-vars1.sh
$ echo $FOO
BAR
Another way is to have the script, rather than setting an env...
Find the files existing in one directory but not in the other [closed]
...r2 | grep dir1 shows which files are only in dir1
awk to print only filename.
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edited Apr 26 '16 at 12:41
Talespin_Kit
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Intent - if activity is running, bring it to front, else start a new one (from notification)
...tions, which - obviously - without any flags, start a new activity every time so I get multiple same activities running on top of each other, which is just wrong.
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How to detect if a variable is an array
What is the best de-facto standard cross-browser method to determine if a variable in JavaScript is an array or not?
12 Ans...
Loop through each row of a range in Excel
...I may well have been told it in the past), but I'm scratching my head to remember it.
4 Answers
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