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Is using Random and OrderBy a good shuffle algorithm?
...Fisher-Yates shuffle which swaps elements.
Implementing a simple Shuffle extension method would basically consist of calling ToList or ToArray on the input then using an existing implementation of Fisher-Yates. (Pass in the Random as a parameter to make life generally nicer.) There are plenty of im...
How can I create a simple message box in Python?
... An included library with Python install.
ctypes.windll.user32.MessageBoxW(0, "Your text", "Your title", 1)
Or define a function (Mbox) like so:
import ctypes # An included library with Python install.
def Mbox(title, text, style):
return ctypes.windll.user32.MessageBoxW(0, text, title, s...
Dynamically access object property using variable
...ket notation: something['bar']
The value between the brackets can be any expression. Therefore, if the property name is stored in a variable, you have to use bracket notation:
var something = {
bar: 'foo'
};
var foo = 'bar';
// both x = something[foo] and something[foo] = x work as expected
...
Why aren't my breakpoints working?
I have breakpoints set but Xcode appears to ignore them.
50 Answers
50
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Save image from URL by paperclip
... use update_attributes rename picture_from_url to picture_url=(value) for example.
– Daniel Rikowski
Jun 2 '13 at 13:07
...
Providing white space in a Swing GUI
...ce appears 'crowded'. How can I provide white space without resorting to explicitly setting the position or size of components?...
Reverse / invert a dictionary mapping
...
For Python 2.7.x
inv_map = {v: k for k, v in my_map.iteritems()}
For Python 3+:
inv_map = {v: k for k, v in my_map.items()}
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i...
machine learning libraries in C# [closed]
..., and i can't find decent documentation for it.
– RCIX
Oct 26 '09 at 10:58
@RCIX: I agree it's not exactly simple, you...
How to insert a row in an HTML table body in JavaScript
...w
var newRow = tableRef.insertRow();
// Insert a cell in the row at index 0
var newCell = newRow.insertCell(0);
// Append a text node to the cell
var newText = document.createTextNode('New row');
newCell.appendChild(newText);
A working demo is here. Also, you can check the documentation of i...
Pick a random value from an enum?
...;
public static Letter randomLetter() {
return VALUES.get(RANDOM.nextInt(SIZE));
}
}
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