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When NOT to use yield (return) [duplicate]
...ence. I don't know if my original testing wasn't done properly, or if the .NET framework improved performance since I first answered this, but the performance difference is not nearly as big as I remember it being--certainly not big enough to worry about in most situations.
– S...
C# Sortable collection which allows duplicate keys
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Tuple is not available in all releases of .NET, but can be substitued with KeyValuePair<K,V>
– Reuben
Mar 5 '15 at 3:09
add a comment
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How would you count occurrences of a string (actually a char) within a string?
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If you're using .NET 3.5 you can do this in a one-liner with LINQ:
int count = source.Count(f => f == '/');
If you don't want to use LINQ you can do it with:
int count = source.Split('/').Length - 1;
You might be surprised to learn...
Undo changes in entity framework entities
this might be a trivial question but: Since ADO.NET entity framework automatically tracks changes (in generated entities) and therefore keeps the original values, how can I rollback changes made to the entity objects?
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C# binary literals
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@D.Singh I see it on the C# 7 list now. github.com/dotnet/roslyn/issues/2136
– Danation
Jul 24 '15 at 20:03
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RegEx: Grabbing values between quotation marks
...ell among different regex interpretations.
– Phil Bennett
Oct 5 '08 at 14:33
5
This has saved my ...
Windows recursive grep command-line
...d a really great tool:
native unix utils:
http://unxutils.sourceforge.net/
http://en.wikipedia.org/wiki/UnxUtils
Just unpack them and put that folder into your PATH environment variable and voila! :)
Works like a charm, and there are much more then just grep ;)
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Where is body in a nodejs http.get response?
...ody of the response through handling data event:
var options = {
host: 'www.google.com',
port: 80,
path: '/upload',
method: 'POST'
};
var req = http.request(options, function(res) {
console.log('STATUS: ' + res.statusCode);
console.log('HEADERS: ' + JSON.stringify(res.headers));
res....
How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
... must have been a very old Chrome, it works on all platforms now: jsfiddle.net/y0z9h9m7
– Ian
May 19 '17 at 20:11
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open a url on click of ok button in android
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On Button click event write this:
Uri uri = Uri.parse("http://www.google.com"); // missing 'http://' will cause crashed
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
that open the your URL.
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