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LINQ Single vs First
...if it finds more than one record matching the criteria.
First will always select the first record from the list. If the query returns just 1 record, you can go with First().
Both will throw an InvalidOperationException exception if the collection is empty.
Alternatively you can use SingleOrDefau...
Pick a random element from an array
...low
Just to answer your question, you can do this to achieve random array selection:
let array = ["Frodo", "sam", "wise", "gamgee"]
let randomIndex = Int(arc4random_uniform(UInt32(array.count)))
print(array[randomIndex])
The castings are ugly, but I believe they're required unless someone else h...
R cannot be resolved - Android error
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Myself also. And when I selected the SDK manager, lo and behold, the build tools shows up auto-checked for installing, with a note that it wasn't installed! What gives???
– David at HotspotOffice
Jun 3 '13 at 2...
Determining the last changelist synced to in Perforce
...number (in the highest row).
Make sure that in the Workspace Tree you have selected the same folder as previously in the Dashboard. Then go to the History tab (View->History) and scroll down to the number noted previously. The number just below that number is the number of your current changelist...
What is the difference between lemmatization vs stemming?
...meeting again tomorrow". Unlike stemming,
lemmatisation can in principle select the appropriate lemma
depending on the context.
Source: https://en.wikipedia.org/wiki/Lemmatisation
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How to get certain commit from GitHub project
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Sivan's answer in gif
1.Click on commits in github
2.Select Browse code on the right side of each commit
3.Click on download zip , which will download source code at that point of time of commit
shar...
Is it possible to ping a server from Javascript?
... You need to ping the servers concurrently. You can achieve that with select, threads or processes. For really hardcore solution you could use Eventmachine.
– Epeli
Nov 26 '10 at 2:59
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jQuery UI datepicker change event not caught by KnockoutJS
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$('.datepicker').datepicker({ onSelect: function(dateText) { $("#date_in").trigger("change"); } });
– elsadek
Jul 20 '14 at 5:40
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Multiple file extensions in OpenFileDialog
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Based on First answer here is the complete image selection options:
Filter = @"|All Image Files|*.BMP;*.bmp;*.JPG;*.JPEG*.jpg;*.jpeg;*.PNG;*.png;*.GIF;*.gif;*.tif;*.tiff;*.ico;*.ICO
|PNG|*.PNG;*.png
|JPEG|*.JPG;*.JPEG*.jpg;*.jpeg
|Bitmap(.B...
Disable Required validation attribute under certain circumstances
...ation'); $('form').removeData('validator'); $.validator.unobtrusive.parse('selector for your form');
– Yannick Smits
May 7 '12 at 14:59
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