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How do I check if an array includes a value in JavaScript?
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Modern browsers have Array#includes, which does exactly that and is widely supported by everyone except IE:
console.log(['joe', 'jane', 'mary'].includes('jane')); //true
You can also use Array#indexOf, which is less direct, but doesn't require polyfills for ...
Selecting element by data attribute
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So how does one post jQuery 1.4.3, select an object by the value of its data object? Lets I I wanted to select in this example, any object with data for customerID equal to 22?
– Trip
Apr 24 '1...
How to convert byte array to string and vice versa?
...itly state the encoding you want to use. If you start with a byte[] and it does not in fact contain text data, there is no "proper conversion". Strings are for text, byte[] is for binary data, and the only really sensible thing to do is to avoid converting between them unless you absolutely have to....
Modify request parameter with servlet filter
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As you've noted HttpServletRequest does not have a setParameter method. This is deliberate, since the class represents the request as it came from the client, and modifying the parameter would not represent that.
One solution is to use the HttpServletRequestW...
How to change a nullable column to not nullable in a Rails migration?
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Actually, according to the Rails 4.2 docs, the 4th param does NOT set a default value for future records: "The method accepts an optional fourth argument to replace existing +NULL+s with some other value. Please note the fourth argument does not set a column’s default."
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What is the 'instanceof' operator used for in Java?
...supertype of Dog and possibly less "refined".
And,
dog instanceof Cat // does not even compile!
This is because Dog is neither a subtype nor a supertype of Cat, and it also does not implement it.
Note that the variable used for dog above is of type Object. This is to show instanceof is a runtim...
How to add screenshot to READMEs in github repository?
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I'm interested how long images loaded this way will live. Does github perform some images cleanup? Like, "if this image not referenced from any github issue, I can safely remove it"...
– artin
Aug 7 '17 at 1:09
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Why is rbindlist “better” than rbind?
...(...)), which is known for being slow when using rbind.data.frame
Where does it really excel
Some questions that show where rbindlist shines are
Fast vectorized merge of list of data.frames by row
Trouble converting long list of data.frames (~1 million) to single data.frame using do.call and l...
Is there a shortcut to move between header and source file in VC++?
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does anyone have a solution for VS2013?
– Shaun Rowan
Nov 19 '13 at 3:00
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