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find() with nil when there are no records
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Yes, just do:
Challenge.find_by_id(10)
For Rails 4 and 5:
Challenge.find_by(id: 10)
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What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
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4 Answers
4
Active
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Generate random string/characters in JavaScript
...haracters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
var charactersLength = characters.length;
for ( var i = 0; i < length; i++ ) {
result += characters.charAt(Math.floor(Math.random() * charactersLength));
}
return result;
}
console.log(m...
Android Gallery on Android 4.4 (KitKat) returns different URI for Intent.ACTION_GET_CONTENT
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finderfinder
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SQL MAX of multiple columns?
...y.
– Disillusioned
Jan 23 '12 at 12:49
5
Necro'ing this older post, but you could wrap each date ...
How to create NS_OPTIONS-style bitmask enumerations in Swift?
...tions.FirstOption
let opt2: MyOptions = .SecondOption
let opt3 = MyOptions(4)
And it also behaves like we'd expect options to behave:
let singleOption = MyOptions.FirstOption
let multipleOptions: MyOptions = singleOption | .SecondOption
if multipleOptions & .SecondOption != nil { // see n...
Split string with delimiters in C
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edited Dec 20 '13 at 13:34
answered Feb 9 '12 at 12:09
hmj...
How to convert a String to its equivalent LINQ Expression Tree?
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Erwin Mayer
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answered May 4 '09 at 19:34
Marc Gravell♦Marc Gravell
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In-Place Radix Sort
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dsimchadsimcha
62.9k4242 gold badges190190 silver badges316316 bronze badges
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PHPMyAdmin Default login password [closed]
I have done a fresh installation of Fedora 14 and installed the phpMyAdmin module. When I run phpMyAdmin, it asks me for a username and password.
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