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Hidden features of mod_rewrite
...rentely the variable gets set to 200 for a redirect, but also other pages (error and stuff) set it to some value. Now that means that you either check if it is empty, is not empty, is 200 or is not 200, depending on what you need.
– Qwerty
May 25 '14 at 0:17
...
Java Interfaces/Implementation naming convention [duplicate]
... (throwing exceptions for arguments that shouldn't be null, etc) and catch errors in testing, using a more efficient implementation in production code (not checking arguments that should not be null for being null since the mock threw exceptions in your tests and you know that the arguments aren't n...
What is @ModelAttribute in Spring MVC?
...ring managed model. If the named bean is not found, instead of throwing an error or returning null, it implicitly takes on the role of @Bean i.e. Create a new instance using the default constructor and add the bean to the model.
For method annotations, think of @ModelAttribute as the equivalent of ...
Java Generics (Wildcards)
...
List<? extends Number> nums = ints;
nums.add(3.14); // compile-time error
assert ints.toString().equals("[1, 2, 3.14]");
To put elements into the structure we need another kind of wildcard called Wildcards with super,
List<Object> objs = Arrays.<Object>asList(2, 3.14, "four"...
Is it possible to include a file in your .gitconfig
...g to be loaded.
If git can't find the target file, it silently ignores the error. This appears to be by design.
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How to copy an object in Objective-C
...
I got an error: No visible @interface for 'NSObject' declares the selector 'copyWithZone:'. I guess this is only required when we are inheriting from some other custom class that implements copyWithZone
– Sam
...
Shall we always use [unowned self] inside closure in Swift
... here
networkManager.fetch(query: query) { [weak self] (results, error) in
self?.updateUI() // could be called any time after vc closes
}
}
@IBAction func buttonPress(self: Any) {
buttonPressClosure()
}
// rest of class below.
}
...
Why can't C++ be parsed with a LR(1) parser?
... but gave it
up for hand-coded parsing, I think because they wanted
better error diagnostics.
There's another approach, though, which is nice and clean
and parses C and C++ just fine without any symbol table
hackery: GLR parsers.
These are full context free parsers (having effectively infinite
look...
What is the difference between __dirname and ./ in node.js?
...But when I run the same script from /home/user/ I get
{ hello: 'world' }
Error: ENOENT, no such file or directory './files/somefile.txt'
at Object.openSync (fs.js:228:18)
at Object.readFileSync (fs.js:119:15)
at Object.<anonymous> (/home/user/dir/dir.js:4:16)
at Module._compi...
What's the use of Jade or Handlebars when writing AngularJs apps
...hing like:
.control-group(
ng-form
name='emailGroup'
ng-class='{"ng-error": emailGroup.$invalid}'
)
label.control-label Email
.controls
input(
type='email'
ng-model='user.email'
required
placeholder='you@example.com'
focus-on='focusEmail'
)
… whic...