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How to convert URL parameters to a JavaScript object?
... on approach
Starting ES6 and on, Javascript offers several constructs in order to create a performant solution for this issue.
This includes using URLSearchParams and iterators
let params = new URLSearchParams('abc=foo&def=%5Basf%5D&xyz=5');
params.get("abc"); // "foo"
Should your use ...
Why should I use a pointer rather than the object itself?
...y, you shouldn't abuse it. So here are some disadvantages in no particular order:
It is error-prone. Manual memory allocation is dangerous and you are prone to leaks. If you are not proficient at using the debugger or valgrind (a memory leak tool), you may pull your hair out of your head. Luckily ...
String concatenation vs. string substitution in Python
...my scripts, and I was wondering what the cost was. I ran them in different orders to make sure nothing was interfering, or getting better performance being first or last. On a side note, I threw in some longer string generators into those functions like "%s" + ("a" * 1024) and regular concat was alm...
Compile time string hashing
...l over std::hash's algorithm, and we must reimplement it as a constexpr in order to evaluate it at compile time. In addition, there are no "transparent" hashes in std, so you cannot (without creating a std::string) hash a raw character buffer as a std::string.
I stuck the std::string custom hasher...
Why does string::compare return an int?
...erload resolution. Finally, C++11 introduces
several new distinctions, in order to support rvalue references;
these, too, are mainly applicable to class types.
Integral promotion refers to the fact that when integral types
smaller than an int are used as rvalues in an expression, in
most contexts,...
Why do we need private subnet in VPC?
...are an instance on a "public" subnet, then you need a public IP address in order to do a significant number of things that servers commonly need to do.
For instances with only a private IP address, there's an alternate way of outbound access to the Internet. This is where Network Address Translati...
Is there a performance gain in using single quotes vs double quotes in ruby?
...
The measured differences are not meaningful. Just the order (because of garbage collection) can make important a difference. There is no runtime difference between ' and " as they are parsed to the same thing.
– Marc-André Lafortune
Aug 1 ...
Can unit testing be successfully added into an existing production project? If so, how and is it wor
...s themselves.
Are there any process/steps that should be adhered to in order to ensure that an existing solutions is properly unit tested and not just bodged in?
Unless you already have it, set up a build server and set up a continuous integration build that runs on every checkin including all...
how to draw smooth curve through N points using javascript HTML5 canvas?
... 2, 4, 4);
}
}
To draw a curve have an array with x, y points in the order: x1,y1, x2,y2, ...xn,yn.
Use it like this:
var myPoints = [10,10, 40,30, 100,10]; //minimum two points
var tension = 1;
drawCurve(ctx, myPoints); //default tension=0.5
drawCurve(ctx, myPoints, tension);
The functio...
Meaning of numbers in “col-md-4”,“ col-xs-1”, “col-lg-2” in Bootstrap
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