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Swift Programming: getter/setter in stored property
...rarily wrong, you should wrap a computed property around it.
private var _foo:Int = 0
var foo:Int {
get {
return _foo
}
set {
if(newValue > 999) {
_foo = 999
} else {
_foo = newValue
}
}
}
Or:
private var _foo:Int = 0
var...
How to return a value from __init__ in Python?
...you want to return an instance variable (or function).
>>> class Foo:
... def __init__(self):
... return 42
...
>>> foo = Foo()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: __init__() should return None
...
Macro vs Function in C
...
#define print(x, y) printf(x y) /* accidentally forgot comma */
print("foo %s", "bar") /* prints "foo %sbar" */
Inline functions and constants help to avoid many of these problems with macros, but aren't always applicable. Where macros are deliberately used to specify polymorphic behavior, uni...
node.js shell command execution
...f the data has been read off of stdout. As such, when you run
console.log(foo.stdout);
you get whatever happens to be stored in foo.stdout at the moment, and there's no guarantee what that will be because your child process might still be running.
Second is that stdout is a readable stream, so 1...
jQuery - selecting elements from inside a element
...
You can use any one these [starting from the fastest]
$("#moo") > $("#foo #moo") > $("div#foo span#moo") > $("#foo span") > $("#foo > #moo")
Take a look
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improve this answe...
Which is better in python, del or delattr?
...
The first is more efficient than the second. del foo.bar compiles to two bytecode instructions:
2 0 LOAD_FAST 0 (foo)
3 DELETE_ATTR 0 (bar)
whereas delattr(foo, "bar") takes five:
2 0 LOAD_GLOBAL ...
Check whether a variable is a string in Ruby
...return true for instances from derived classes.
class X < String
end
foo = X.new
foo.is_a? String # true
foo.kind_of? String # true
foo.instance_of? String # false
foo.instance_of? X # true
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...
C# member variable initialization; best practice?
...rties (field initializers cannot) - i.e.
[DefaultValue("")]
public string Foo {get;set;}
public Bar() { // ctor
Foo = "";
}
Other than that, I tend to prefer the field initializer syntax; I find it keeps things localized - i.e.
private readonly List<SomeClass> items = new List<SomeCla...
How can I escape square brackets in a LIKE clause?
...acter in a range or set. For example, using LIKE '[fz]oo' will match both 'foo' and 'zoo'.
– Holistic Developer
Feb 1 '17 at 17:18
4
...
Use git “log” command in another folder
...with the --git-dir parameter, before passing any commands.
git --git-dir /foo/bar/.git log
(Specifying the .git directory is necessary.) From the documentation:
--git-dir=<path>
Set the path to the repository. This can also be controlled by setting the GIT_DIR environment variable....