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Difference between Python's Generators and Iterators
What is the difference between iterators and generators? Some examples for when you would use each case would be helpful.
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How to get a string after a specific substring?
...ring.split("world",1)[1]
split takes the word(or character) to split on and optionally a limit to the number of splits.
In this example split on "world" and limit it to only one split.
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The “unexpected ++” error in jslint [duplicate]
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@MattClarkson: According to Crockford: The increment ++ and decrement -- operators make it possible to write in an extremely terse style. In languages such as C, they made it possible to write one-liners that: for (p = src, q = dest; !*p; p++, q++) *q = *p; Most of the buffer over...
When should we use mutex and when should we use semaphore
When should we use mutex and when should we use semaphore ?
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Is SHA-1 secure for password storage?
...t to 160 or 128 bits (to save on storage cost). Some of the SHA-3 round-2 candidates appear to be faster than SHA-1 while being arguably "more secure"; yet they are still a bit new, so sticking to SHA-256 or SHA-512 would be a safer route right now. It would make you look professional and cautious, ...
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...
Alternate FizzBuzz Questions [closed]
...n a small list of relatively simple programming problems used to weed out candidates, just like FizzBuzz. Here are some of the problems I've seen, in order of increasing difficulty:
Reverse a string
Reverse a sentence ("bob likes dogs" -> "dogs likes bob")
Find the minimum value in a list
Find ...
What is the most pythonic way to check if an object is a number?
...ts rather than what it is, perform your operations as if you have a number and use exceptions to tell you otherwise.
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Is a Python list guaranteed to have its elements stay in the order they are inserted in?
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what if I return a local list from a function and use that in the calling function. That is def fn_1(): lst = [] lst.append(1) lst.append(2) return lst and def fn_2(): print(fn_1()) Will the order be same ALWAYS irrespective of how many times or where ever I use fn_1() ?...
How to store standard error in a variable
... the error file thus:
ERROR=$(</tmp/Error)
The shell recognizes this and doesn't have to run 'cat' to get the data.
The bigger question is hard. I don't think there's an easy way to do it. You'd have to build the entire pipeline into the sub-shell, eventually sending its final standard outp...