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Finding all possible combinations of numbers to reach a given sum
...])=15
This type of algorithms are very well explained in the following Standford's Abstract Programming lecture - this video is very recommendable to understand how recursion works to generate permutations of solutions.
Edit
The above as a generator function, making it a bit more useful. Require...
How to calculate the SVG Path for an arc (of a circle)
...or the original question, since they have more mathematical pseudocode for converting between the two parameterizations (which I didn't realize when I first wrote this answer).
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What characters are allowed in an email address?
...sically makes a character-based approach useless (sorry), unless you first convert the internationalized email addresses to Punycode.
After doing that you can follow (most of) the advice above.
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How can I make a WPF combo box have the width of its widest element in XAML?
...inForms AutoSizeMode=GrowOnly.
The way I did this was with a custom value converter:
public class GrowConverter : IValueConverter
{
public double Minimum
{
get;
set;
}
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{...
How does one generate a random number in Apple's Swift language?
I realize the Swift book provided an implementation of a random number generator. Is the best practice to copy and paste this implementation in one's own program? Or is there a library that does this that we can use now?
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What is JSON and why would I use it?
...ks mson)
Using JSON with Yahoo! Web Services (Thanks gljivar)
JSON to CSV Converter
Alternative JSON to CSV Converter
JSON Lint (JSON validator)
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How can mixed data types (int, float, char, etc) be stored in an array?
...mbiguation page for "discriminated union" - "disjoint union" in set theory and, as @H2CO3 mentioned, "tagged union" in computer science.
– Izkata
Sep 2 '13 at 17:38
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Best way to use PHP to encrypt and decrypt passwords? [duplicate]
...rim($decrypttext);
}
}
And to call it:
$str = "My secret String";
$converter = new Encryption;
$encoded = $converter->encode($str );
$decoded = $converter->decode($encoded);
echo "$encoded<p>$decoded";
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Java: Equivalent of Python's range(int, int)?
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From Java 8, IntStream and LongStream have methods range and rangeClosed.
– Jose Manuel Gomez Alvarez
Dec 19 '18 at 22:51
a...
Passing a 2D array to a C++ function
... You're right, there're only really two cases; one is a pointer-to-pointer and other being a single pointer to an integer array of size n i.e. int (*a) [10].
– legends2k
Jul 10 '13 at 10:44
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