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.NET: Which Exception to Throw When a Required Configuration Setting is Missing?
...mited in your exception-throwing to existing exceptions in the Framework. If you do decide to use existing exceptions, you don't absolutely have to follow the documentation to the letter. The documentation will describe how the framework uses a given exception, but doesn't imply any limitation on ...
Extract part of a regex match
...p(1) in python to retrieve the captured string (re.search will return None if it doesn't find the result, so don't use group() directly):
title_search = re.search('<title>(.*)</title>', html, re.IGNORECASE)
if title_search:
title = title_search.group(1)
...
What is global::?
...define types. For example:
class foo
{
class System
{
}
}
If you were to use System where it would be locally scoped in the foo class, you could use:
global::System.Console.WriteLine("foobar");
to access the global namespace.
Example
using System;
class Foo
{
public void b...
Loading/Downloading image from URL on Swift
...lication, so I first tried with Objective-C and it worked, however, with Swift, I've a compilation error:
34 Answers
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Generate an integer that is not among four billion given ones
...to find of which of the possible numbers in that bucket are used already.
If it means more than 32 bits, but still of bounded size: Do as above, ignoring all input numbers that happen to fall outside the (signed or unsigned; your choice) 32-bit range.
If "integer" means mathematical integer: Read ...
Listing all permutations of a string/integer
...ents, concatenated with every permutation of the other elements.
Example:
If the set just has one element -->
return it.
perm(a) -> a
If the set has two characters: for
each element in it: return the
element, with the permutation of the
rest of the elements added, like so:
perm(ab) ->
...
How best to include other scripts?
...
This will not work if the script is executed through $PATH. then which $0 will be useful
– Hugo
Sep 13 '09 at 13:49
42
...
How to generate random number in Bash?
...ly not for crypto), but it's probably adequate for basic scripting tasks.
If you're doing something that requires serious random numbers you can use /dev/random or /dev/urandom if they're available:
$ dd if=/dev/urandom count=4 bs=1 | od -t d
...
How to get the function name from within that function?
...!
In ES6, you can just use myFunction.name.
Note: Beware that some JS minifiers might throw away function names, to compress better; you may need to tweak their settings to avoid that.
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Select TreeView Node on right click before displaying ContextMenu
...eViewItem = VisualUpwardSearch(e.OriginalSource as DependencyObject);
if (treeViewItem != null)
{
treeViewItem.Focus();
e.Handled = true;
}
}
static TreeViewItem VisualUpwardSearch(DependencyObject source)
{
while (source != null && !(source is TreeViewItem)...