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Connect Java to a MySQL database
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answered May 15 '10 at 9:10
Sean OwenSean Owen
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Where am I? - Get country
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answered Sep 7 '10 at 15:47
stealthcopterstealthcopter
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How to display string that contains HTML in twig template?
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answered Dec 2 '11 at 10:55
Aurimas LičkusAurimas Ličkus
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Junit: splitting integration test and Unit tests
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10
I currently use separate directories due to organisational policy (and Junit 3 legacy) but I'm ...
How do I change column default value in PostgreSQL?
...owLowRepImageUploadWarning: true,
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How to Generate unique file names in C#
...ileName = $@"{Guid.NewGuid()}.txt";
In my programs, I sometimes try e.g. 10 times to generate a readable name ("Image1.png"…"Image10.png") and if that fails (because the file already exists), I fall back to GUIDs.
Update:
Recently, I've also use DateTime.Now.Ticks instead of GUIDs:
var myUniq...
Is there any performance gain in indexing a boolean field?
...if there are relatively few records of one value. For example, if you have 1000 records and 10 of them are TRUE, then it would be useful if you searching with isok = 1
As Michael Durrant mentioned, it also makes writes slower.
EDIT: Possible duplication: Indexing boolean fields
Here it explains t...
How to add a primary key to a MySQL table?
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On showing dialog i get “Can not perform this action after onSaveInstanceState”
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edited Dec 10 '18 at 11:40
Salam El-Banna
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.NET List Concat vs AddRange
...at and AddRange with a List<KeyValuePair<string, string>> with 1000 elements, concatenated/added 100 times, and AddRange was extremely faster. The results were these: AddRange 13 ms, Concat().ToList() 16,000 ms, and Concat on an IEnumerable doing only the ToList at the end: 2,700 ms.
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