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Is std::vector so much slower than plain arrays?
...d::vector is "implemented as an array," blah blah blah. Today I went down and tested it, and it seems to be not so:
22 Ans...
Is it possible to use argsort in descending order?
...
If you negate an array, the lowest elements become the highest elements and vice-versa. Therefore, the indices of the n highest elements are:
(-avgDists).argsort()[:n]
Another way to reason about this, as mentioned in the comments, is to observe that the big elements are coming last in the ar...
'printf' vs. 'cout' in C++
What is the difference between printf() and cout in C++?
16 Answers
16
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Getting SyntaxError for print with keyword argument end=' '
...rom __future__ import print_function
The same goes with unicode_literals and some other nice things (with_statement, for example). This won't work in really old versions (i.e. created before the feature was introduced) of Python 2.x, though.
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What's the difference between Thread start() and Runnable run()
...ing) thread. No thread creation.
R1 r1 = new R1();
R2 r2 = new R2();
r1 and r2 are just two different objects of classes that implement the Runnable interface and thus implement the run() method. When you call r1.run() you are executing it in the current thread.
Second example: Two separate thr...
Implode an array with JavaScript?
... topic ranting. As @jon_darkstar alreadt pointed out, jQuery is JavaScript and not vice versa. You don't need to know JavaScript to be able to understand how to use jQuery, but it certainly doesn't hurt and once you begin to appreciate reusability or start looking at the bigger picture you absolutel...
An example of how to use getopts in bash
...t;0 (for the sake of simplicity I didn't differentiate between those cases and nobody forces you to print the usage text in the latter case). I have seen programs which always return != 0, though, even on -h/--help. Maybe I should update the snippet in case people use this as boilerplate (I hope not...
LEFT OUTER JOIN in LINQ
...ay to do that with where clause?
Correct problem:
For inner join is easy and I have a solution like this
22 Answers
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Better way to get type of a Javascript variable?
...011/08/08/fixing-the-javascript-typeof-operator/
He goes through the pros and cons of the various methods then defines a new method 'toType' -
var toType = function(obj) {
return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase()
}
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How to clean project cache in Intellij idea like Eclipse's clean?
...for your installed version. The location of this folder depends on your OS and version installed.
Windows Vista, 7, 8, 10
<SYSTEM DRIVE>\Users\<USER ACCOUNT NAME>\.<PRODUCT><VERSION>
Linux/Unix
~/.<PRODUCT><VERSION>
Mac OS
~/Library/Caches/<PRODUCT><V...