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Regex for numbers only
...e it is finding "a match" not a match of the full string. You can fix this by changing your regexp to specifically look for the beginning and end of the string.
^\d+$
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How to check if my string is equal to null?
...urn false;
}
Updated
For Kotlin we check if the string is null or not by following
return myString.isNullOrEmpty() // Returns `true` if this nullable String is either `null` or empty, false otherwise
return myString.isEmpty() // Returns `true` if this char sequence is empty (contains no charac...
Code for Greatest Common Divisor in Python [closed]
...=0, the result will have the same sign as b (so that when
b is divided by it, the result comes out positive).
"""
while b:
a, b = b, a%b
return a
As of Python 3.5, gcd is in the math module; the one in fractions is deprecated. Moreover, inspect.getsource no longer returns e...
Eclipse JUNO doesn't start
...s resulted in eclipse still not opening), but what information have i lost by removing this file, and is there a way to recover it from the file?
– inor
Oct 10 '12 at 5:55
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How to get the mysql table columns data type?
...y the maximum length. Isn't it better to use SELECT DATA_TYPE, as proposed by other answers?
– Fabio says Reinstate Monica
Jun 29 '17 at 11:30
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How to select distinct rows in a datatable and store into an array
... distinct. You could do it with Linq to DataSet: table.AsEnumerable().GroupBy(row => row.Field<int>("mo")).Select(group => group.First()).CopyToDataTable()
– Thomas Levesque
Dec 5 '13 at 9:39
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How to delete a cookie?
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You can do this by setting the date of expiry to yesterday.
Setting it to "-1" doesn't work. That marks a cookie as a Sessioncookie.
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Converting a List to a comma separated string
...up the lengths to precalculate the buffer size, and also "primes the pump" by appending the first string outside the loop, and then, inside the loop, unconditionally appending the delimiter before the next string. Combined with some unsafe/internal tricks, it should be very fast.
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Tutorials and libraries for OpenGL-ES games on Android [closed]
... site you mentioned is very good, but I think the best one I have found is by INsanityDesign. It is a port of the great OpenGL nehe tutorials. This is a great place to start, it gives you source at different levels that you can play with and change to see what different parts do. Other than that ...
How to remove the default link color of the html hyperlink 'a' tag?
...If you don't want to see the underline and default color which is provided by the browser, you can keep the following code in the top of your main.css file. If you need different color and decoration styling you can easily override the defaults using the below code snippet.
a, a:hover, a:focus, a...