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CHECK constraint in MySQL is not working
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MySQL 8.0.16 is the first version that supports CHECK constraints.
Read https://dev.mysql.com/doc/refman/8.0/en/create-table-check-constraints.html
If you use MySQL 8.0.15 or earlier, the MySQL Reference Manual says:
The CHECK clause is parsed but ignored by all storage engines....
Stop setInterval call in JavaScript
I am using setInterval(fname, 10000); to call a function every 10 seconds in JavaScript. Is it possible to stop calling it on some event?
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How to get element by classname or id
I am trying to find the element in html by angularjs.
4 Answers
4
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How to change MenuItem icon in ActionBar programmatically
How to change MenuItem icon in ActionBar programmatically? I tried to use
9 Answers
9
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Best way to center a on a page vertically and horizontally? [duplicate]
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The best and most flexible way
My demo on dabblet.com
The main trick in this demo is that in the normal flow of elements going from top to bottom, so the margin-top: auto is set to zero. However, an absolutely positioned element acts the same for distribution of free space, and simila...
How can I make space between two buttons in same div?
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Put them inside btn-toolbar or some other container, not btn-group. btn-group joins them together. More info on Bootstrap documentation.
Edit: The original question was for Bootstrap 2.x, but the same is still valid for Bootstrap 3 a...
How to check if a function exists on a SQL database
I need to find out if a function exists on a database, so that I can drop it and create it again. It should basically be something like the following code that I use for stored procedures:
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Android: why is there no maxHeight for a View?
View's have a minHeight but somehow are lacking a maxHeight :
17 Answers
17
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How to draw circle in html page?
How do you draw a circle using HTML5 and CSS3?
16 Answers
16
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What's the difference between using “let” and “var”?
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Scoping rules
Main difference is scoping rules. Variables declared by var keyword are scoped to the immediate function body (hence the function scope) while let variables are scoped to the immediate enclosing block denoted by { ...