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What is the Swift equivalent of -[NSObject description]?
...le protocol and then also implement a string property called description.
For example:
class MyClass: CustomStringConvertible {
let foo = 42
var description: String {
return "<\(type(of: self)): foo = \(foo)>"
}
}
print(MyClass()) // prints: <MyClass: foo = 42>
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Linq with group by having count
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Thanks for providing both forms of syntax! :D
– Jess
Nov 17 '15 at 20:38
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Sort array of objects by string property value
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for those looking for a sort where the field is numeric, the compare function body: return a.value - b.value; (ASC)
– Andre Figueiredo
Jan 8 '14 at 12:06
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Java NIO FileChannel versus FileOutputstream performance / usefulness
I am trying to figure out if there is any difference in performance (or advantages) when we use nio FileChannel versus normal FileInputStream/FileOuputStream to read and write files to filesystem. I observed that on my machine both perform at the same level, also many times the FileChannel way...
Visual Studio Wcf Test Client - entering an Int array
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twig: IF with multiple conditions
...eft and the right expression is true.
not Negate the expression.
For more complex operations, it may be best to wrap individual expressions in parentheses to avoid confusion:
{% if (foo and bar) or (fizz and (foo + bar == 3)) %}
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Xcode 4 - “Valid signing identity not found” error on provisioning profiles on a new Macintosh insta
... of
the window. Xcode asks you to choose a file name and password.
Edit for Xcode 4.4:
With Xcode 4.4, at step 3 choose Provisioning Profiles under LIBRARY. Then select your provisioning profiles either with the mouse or Command-A.
Also, Apple is making improvements in the way they manage this...
Choose newline character in Notepad++
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For a new document: Settings -> Preferences -> New Document/Default Directory
-> New Document -> Format -> Windows/Mac/Unix
And for an already-open document: Edit -> EOL Conversion
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What does the regular expression /_/g mean?
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What is the optimal length for user password salt? [closed]
... when salting and hashing a user's password. Are there any best practices for how long the salt should be? I'll be storing the salt in my user table, so I would like the best tradeoff between storage size and security. Is a random 10 character salt enough? Or do I need something longer?
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