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What is Node.js' Connect, Express and “middleware”?
...ad and install express globally (check the express guide).
Running express foo in a command line (not in node) will create a ready-to-run application named foo. Change to its (newly created) directory and run it with node with the command node <appname>, then open http://localhost:3000 and see...
What is the advantage of using Restangular over ngResource?
...RL than '/users/123'? (just playing Devil's advocate) It just seems like '/foo/123/bar/123' is a lot easier than .one('foo', 123).one('bar', 123).
– Ben Lesh
Jul 13 '13 at 17:48
5
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What happens to a declared, uninitialized variable in C? Does it have a value?
...tic) are initialized to zero:
int x; // zero
int y = 0; // also zero
void foo() {
static int x; // also zero
}
Non-static variables (local variables) are indeterminate. Reading them prior to assigning a value results in undefined behavior.
void foo() {
int x;
printf("%d", x); // the co...
What causes and what are the differences between NoClassDefFoundError and ClassNotFoundException?
...e that the class SomeClass in in your CLASSPATH.
private static SomeClass foo = new SomeClass();
Tip : To find out which jar a class belongs to, you can use the web site jarFinder . This allows you to specify a class name using wildcards and it searches for the class in its database of jars. jarh...
Which is more efficient, a for-each loop, or an iterator?
...
I believe he was saying the opposite, that foo.get(i) can be a lot less efficient. Think of LinkedList. If you do a foo.get(i) on the middle of a LinkedList it has to traverse all the previous nodes to get to i. An iterator, on the other hand, will keep a handle to...
Argparse: Required arguments listed under “optional arguments”?
...ver you want to call them):
parser = argparse.ArgumentParser(description='Foo')
parser.add_argument('-o', '--output', help='Output file name', default='stdout')
requiredNamed = parser.add_argument_group('required named arguments')
requiredNamed.add_argument('-i', '--input', help='Input file name', ...
What's the difference between “declare class” and “interface” in TypeScript
...e.
For example when we have the following interface:
interface test {
foo: number,
bar: string,
}
The objects which we define which have this interface type need to match the interface exactly:
// perfect match has all the properties with the right types, TS compiler will not complain.
c...
JavaScript DOM remove element
...
If you are happy to use the brilliant function:
$("#foo").remove();
To completely delete the element from the DOM.
To remove the elements without removing data and events, use this instead:
$("#foo").detach();
jQuery Docs
The .remove() method takes elements out of the DOM. ...
Why do we use Base64?
...to encode characters not valid for a URL in the URL itself:
http://www.foo.com/hello my friend -> http://www.foo.com/hello%20my%20friend
This is because we want to send a space over a system that will think the space is smelly.
All we are doing is ensuring there is a 1-to-1 mapping between...
What's the difference between eval, exec, and compile?
... compile('for i in range(3): print("Python is cool")',
'foo.py', 'exec')
>>> eval(code)
Python is cool
Python is cool
Python is cool
If one looks into eval and exec source code in CPython 3, this is very evident; they both call PyEval_EvalCode with same arguments, the o...