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“open/close” SqlConnection or keep open?
...osed when you call SqlConnection.Open. ASP.NET recycles active connections from the pool when the connection string matches a previously used connection string. The overhead involved in this is inconsequential, and additionally, trying to "do it yourself" means you have to assume all the management ...
Debug.Assert vs Exception Throwing
...contrived) practical example may help illuminate the difference:
(adapted from MoreLinq's Batch extension)
// 'public facing' method
public int DoSomething(List<string> stuff, object doohickey, int limit) {
// validate user input and report problems externally with exceptions
if(st...
How to get the response of XMLHttpRequest?
...e the exception like below
Failed to read the \'responseText\' property from \'XMLHttpRequest\':
The value is only accessible if the object\'s \'responseType\' is \'\'
or \'text\' (was \'arraybuffer\')
Best way to access the response from XHR as follows
function readBody(xhr) {
var dat...
Is it possible to pass a flag to Gulp to have it run tasks in different ways?
...more): https://github.com/gulpjs/gulp/blob/master/docs/recipes/pass-params-from-cli.md
Alternative with minimist
From Updated Ref: https://github.com/gulpjs/gulp/blob/master/docs/recipes/pass-arguments-from-cli.md
gulpfile.js
// npm install --save-dev gulp gulp-if gulp-uglify minimist
var gul...
How to handle WndProc messages in WPF?
...code included below)
// 'this' is a Window
HwndSource source = HwndSource.FromHwnd(new WindowInteropHelper(this).Handle);
source.AddHook(new HwndSourceHook(WndProc));
private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
// do stuff
return ...
Principal component analysis in Python
...
The latest update is from 09.03.2016, but do note that ir is only a bug-fix release: Note that from this release MDP is in maintenance mode. 13 years after its first public release, MDP has reached full maturity and no new features are planned in...
How to output loop.counter in python jinja template?
...ter variable inside the loop is called loop.index in jinja2.
>>> from jinja2 import Template
>>> s = "{% for element in elements %}{{loop.index}} {% endfor %}"
>>> Template(s).render(elements=["a", "b", "c", "d"])
1 2 3 4
See http://jinja.pocoo.org/docs/templates/ for ...
How do you manage your gists on GitHub? [closed]
... interesting. Github also has a list of all the search prefixes available from the search page, see the Pro Tip at the bottom: gist.github.com/search
– mike
May 29 '18 at 21:25
...
Implementing comparison operators via 'tuple' and 'tie', a good idea?
(Note: tuple and tie can be taken from Boost or C++11.)
When writing small structs with only two elements, I sometimes tend to choose a std::pair , as all important stuff is already done for that datatype, like operator< for strict-weak-ordering.
The downsides though are the pretty much us...
Java regex capturing groups indexes
...or 1*0, then $) versus ^0*1|1*0$ (^0*1 or 1*0$).
A capturing group, apart from grouping, will also record the text matched by the pattern inside the capturing group (pattern). Using your example, (.*):, .* matches ABC and : matches :, and since .* is inside capturing group (.*), the text ABC is rec...