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How do I parse JSON with Objective-C?
...f the OS X v10.7 and iOS 5 launches, probably the first thing to recommend now is NSJSONSerialization, Apple's supplied JSON parser. Use third-party options only as a fallback if you find that class unavailable at runtime.
So, for example:
NSData *returnedData = ...JSON data, probably from a web r...
Convert .pem to .crt and .key
...pem
or
openssl rsa -in private.pem -pubout -out public.pem
You’ll now have public.pem containing just your public key, you can freely share this with 3rd parties.
You can test it all by just encrypting something yourself using your public key and then decrypting using your private key, fi...
Python dictionary from an object's fields
Do you know if there is a built-in function to build a dictionary from an arbitrary object? I'd like to do something like this:
...
In C++, what is a “namespace alias”?
...ion - in fact there have been far more obvious questions asked in the past now with many votes. Having said that, people might feel you're simply trying to gain reputation for yourself. A way round this is to mark one or both of the question/answer as "community wiki". Personally I'd go with ques...
Understanding $.proxy() in jQuery
...setTimeout($.proxy(function() {
$(this).addClass('aNewClass'); // Now "this" is again our element
}, this), 1000);
// ---^--------------and tell it that we want our DOM element to be the
// value of "this" in the function
});
So after we gave $.proxy() the f...
Twitter Bootstrap 3.0 how do I “badge badge-important” now
...g: 1px 9px 2px;
font-size: 12.025px;
font-weight: bold;
white-space: nowrap;
color: #ffffff;
background-color: #999999;
-webkit-border-radius: 9px;
-moz-border-radius: 9px;
border-radius: 9px;
}
.badge:hover {
color: #ffffff;
text-decoration: none;
cursor: pointer;
}
.badge-err...
How to pass a class type as a function parameter
...class of the instances of returningClass
handler(returningClass())
}
Now there's the problem of constructing an instance of T to pass to handler: if you try and run the code right now the compiler will complain that T is not constructible with (). And rightfully so: T has to be explicitly cons...
Setting JDK in Eclipse
...te to Computer > Windows C: > Program Files > Java, then click OK
Now you should see all installed JREs, select the one you want
Click OK/Finish a million times
Easy.... not.
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How to modify a pull request on GitHub to change target branch to merge into?
...
You can now:
https://github.com/blog/2224-change-the-base-branch-of-a-pull-request
"You can now change the base branch of an open pull request. After you’ve created a pull request, you can modify the base branch so that the change...
Devise - How do I forbid certain users from signing in?
...d self.is_active?
end
end
UPDATE
As Matt Huggins notes, the method is now called active_for_authentication? (Documentation)
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