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What is an “unwrapped value” in Swift?
...l.
This would not work:
var cantBeNil : Int = 4
cantBeNil = nil // can't do this
To get the value from your variable if it is optional, you have to unwrap it. This just means putting an exclamation point at the end.
var canBeNil : Int? = 4
println(canBeNil!)
Your code should look like this:
...
In PHP with PDO, how to check the final SQL parametrized query? [duplicate]
In PHP, when accessing MySQL database with PDO with parametrized query, how can you check the final query (after having replaced all tokens)?
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Difference between Mock / Stub / Spy in Spock test framework
I don't understand the difference between Mock, Stub, and Spy in Spock testing and the tutorials I have been looking at online don't explain them in detail.
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When and why I should use session_regenerate_id()?
... session ID with a new one, and keep the current session information.
What does it do?
It mainly helps prevent session fixation attacks. Session fixation attacks is where a malicious user tries to exploit the vulnerability in a system to fixate (set) the session ID (SID) of another user. By doing so...
How to check that a string is an int, but not a double, etc.?
...onsists of all digits.\n";
} else {
echo "The string $testcase does not consist of all digits.\n";
}
}
?>
The above example will output:
The string 1820.20 does not consist of all digits.
The string 10002 consists of all digits.
The string wsl!12 does not consist of all digits...
PHP method chaining?
...bject-oriented approach, called 'method chaining'. What is it exactly? How do I implement it?
10 Answers
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Read/write files within a Linux kernel module
...t read/write files from kernel, instead how to use /proc or netlink to do that. I want to read/write anyway. I have also read
Driving Me Nuts - Things You Never Should Do in the Kernel .
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Programmatically register a broadcast receiver
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Nice one - had no idea you could do this :)
– Chris Noldus
Jan 29 '14 at 21:31
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What's the best practice to “git clone” into an existing folder?
...opy of the project, without any source control meta data. Now, I'd like to do the equivalent of git-clone into this folder, and keep my local changes.
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Are NSLayoutConstraints animatable? [duplicate]
...e and I should be updating the NSLayoutConstraints instead. However, they don't seem to be animatable. Has anyone gotten them to work with success?
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