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Usage of __slots__?
...one time in an inheritance tree. For example:
class Base:
__slots__ = 'foo', 'bar'
class Right(Base):
__slots__ = 'baz',
class Wrong(Base):
__slots__ = 'foo', 'bar', 'baz' # redundant foo and bar
Python doesn't object when you get this wrong (it probably should), problems migh...
A definitive guide to API-breaking changes in .NET
... and F# most likely, but untested)
API before change
public static class Foo
{
public static void bar(int i);
}
API after change
public static class Foo
{
public static bool bar(int i);
}
Sample client code working before change
Foo.bar(13);
...
How to do constructor chaining in C#
... (using this like a method) to pick the overload, inside the class:
class Foo
{
private int id;
private string name;
public Foo() : this(0, "")
{
}
public Foo(int id, string name)
{
this.id = id;
this.name = name;
}
public Foo(int id) : this...
Self-references in object literals / initializers
...
Well, the only thing that I can tell you about are getter:
var foo = {
a: 5,
b: 6,
get c() {
return this.a + this.b;
}
}
console.log(foo.c) // 11
This is a syntactic extension introduced by the ECMAScript 5th Edition Specification, the syntax is supported by m...
In what cases do I use malloc and/or new?
...
With regard to calling delete foo when you should call delete []foo, some compilers will fix this automagically for you and not leak and other will only delete the first entry and leak. I had a few of these in some code and valgrind will find them for you...
How can I access “static” class variables within class methods in Python?
...
Instead of bar use self.bar or Foo.bar. Assigning to Foo.bar will create a static variable, and assigning to self.bar will create an instance variable.
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Simplest/Cleanest way to implement singleton in JavaScript?
... not look very clean or JS like. Other soultions that end up with a = new Foo(); b = new Foo(); a === b //true
– Matthias
Nov 7 '13 at 13:24
...
How to initialize a two-dimensional array in Python?
... for j in range (0, 10): } with a list /
new.append(foo) / comprehension /
twod_list.append(new) /
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A variable modified inside a while loop is not remembered
In the following program, if I set the variable $foo to the value 1 inside the first if statement, it works in the sense that its value is remembered after the if statement. However, when I set the same variable to the value 2 inside an if which is inside a while statement, it's forgotten af...
Count immediate child div elements using jQuery
...
$("#foo > div").length
Direct children of the element with the id 'foo' which are divs. Then retrieving the size of the wrapped set produced.
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