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LINQ Group By into a Dictionary Object
...ring, List<CustomObject>> myDictionary = ListOfCustomObjects
.GroupBy(o => o.PropertyName)
.ToDictionary(g => g.Key, g => g.ToList());
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Regular expression to get a string between two strings in Javascript
...me the cow portion. To capture the portion in between, you use a capturing group (just put the portion of pattern you want to capture inside parenthesis):
cow(.*)milk
No lookaheads are needed at all.
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Ruby Regexp group matching, assign variables on 1 line
...t it back on a line and even using it twice when there is only one capture group. Eg.., string.match(regex)&.captures&.first
– Gerry Shaw
Mar 12 '17 at 22:35
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Select SQL Server database size
...s.master_files WITH(NOWAIT)
WHERE database_id = DB_ID() -- for current db
GROUP BY database_id
Output:
-- my query
name log_size_mb row_size_mb total_size_mb
-------------- ------------ ------------- -------------
xxxxxxxxxxx 512.00 302.81 814.81
-- sp_spaceused
dat...
Javascript replace with reference to matched group?
... can be a function and it is passed different arguments based on the catch groups? Amazing!
– daveloyall
Jun 13 '14 at 20:36
5
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Getting started with F# [closed]
...t aggregator
F# on twitter
F# on github (fsharpx)
F# team blog
Meetup Groups
New York City F# User Group
Chicago F# Users
F# Seattle User Group
The San Francisco Bay Area F# User Group
F#unctional Londoners Meetup Group
The Zurich FSharp Users Meetup Group
Videos
F# videos on Channel9
F...
Assign multiple columns using := in data.table, by group
... and also copies the small vector. If efficiency is a problem as number of groups rises then please let us know.
– Matt Dowle
May 21 '14 at 11:49
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How can I check whether a radio button is selected with JavaScript?
....
[name=gender] limits it to tags with the name gender within the previous group.
:checked limits it to checkboxes/radio buttons that are selected within the previous group.
If you want to avoid this altogether, mark one of the radio buttons as checked (checked="checked") in the HTML code, which w...
What's the best way to store a group of constants that my program uses? [closed]
...appropriate. Consider using several classes, so that you end up with good groups of related constants, and not one giant Globals.cs file.
Additionally, for some int constants, consider the notation:
[Flags]
enum Foo
{
}
As this allows for treating the values like flags.
...
Pan & Zoom Image
... on the center of the image. The RenderTransform is also set to a TransformGroup containing a ScaleTransform and a TranslateTransform.
I then handled the MouseWheel event on the image to implement zooming
private void image_MouseWheel(object sender, MouseWheelEventArgs e)
{
var st = (ScaleTran...