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How do I rename a column in a SQLite database table?
I would need to rename a few columns in some tables in a SQLite database.
I know that a similar question has been asked on stackoverflow previously, but it was for SQL in general, and the case of SQLite was not mentioned.
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How can I generate random alphanumeric strings?
...ength)]).ToArray());
}
(Note: The use of the Random class makes this unsuitable for anything security related, such as creating passwords or tokens. Use the RNGCryptoServiceProvider class if you need a strong random number generator.)
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Why are properties without a setter not serialized
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It's a limitation of XmlSerializer it doesn't serialize read-only properties, what you have done in your second example is essentially the hack to get it to serialize, however, it's useless if you need it to deserialize later...
how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
Some SQL servers have a feature where INSERT is skipped if it would violate a primary/unique key constraint. For instance, MySQL has INSERT IGNORE .
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How to check if an element is in an array
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edited May 22 '19 at 7:55
Sazzad Hissain Khan
25.8k1515 gold badges106106 silver badges153153 bronze badges
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How do you launch the JavaScript debugger in Google Chrome?
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edited Sep 13 '17 at 16:55
mplungjan
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Android screen size HDPI, LDPI, MDPI [duplicate]
I have a background that I need fit in all screen sizes. I have three folders, hdpi , ldpi and mdpi for drawables, but in the emulator there isn't any referense to what resolution hdpi is and what mdpi and ldpi are.
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Is there a standard keyboard shortcut to build the current project in Visual Studio?
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Assign the shortcut to "Build.BuildSelection". If you have a solution with several projects and files open from the various projects, whatever file you are currently editing will define the project that will be built when you use the assigned shortcut for "Build.BuildSelection".
You'll know the...
How to fully delete a git repository created with init?
I created a git repository with git init . I'd like to delete it entirely and init a new one.
13 Answers
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How to select option in drop down protractorjs e2e tests
... optionNumber, and selects that optionNumber. If the optionNumber is null it selects nothing (leaving the dropdown unselected).
var selectDropdownbyNum = function ( element, optionNum ) {
if (optionNum){
var options = element.all(by.tagName('option'))
.then(function(options){
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