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Easy interview question got harder: given numbers 1..100, find the missing number(s) given exactly k
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You will find it by reading the couple of pages of Muthukrishnan - Data Stream Algorithms: Puzzle 1: Finding Missing Numbers. It shows exactly the generalization you are looking for. Probably this is what your interviewer read and why he posed t...
Is explicitly closing files important?
...osed" but does not explain "what if it stays open". For the latter, please read the "What would happen if a file stays open?" part in this answer (askubuntu.com/questions/701491/…)
– RayLuo
Aug 22 '16 at 16:58
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Rails CSRF Protection + Angular.js: protect_from_forgery makes me to log out on POST
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I think reading CSRF-value from DOM is not a good solution, it's just a workaround.
Here is a document form angularJS official website http://docs.angularjs.org/api/ng.$http :
Since only JavaScript that runs on your domain could re...
How do I run a batch file from my Java Application?
...ld also work with just `cmd /c build.bat", in which case the output can be read from the sub-process in Java if desired.
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How can I detect if a file is binary (non-text) in python?
...))
Example:
>>> is_binary_string(open('/usr/bin/python', 'rb').read(1024))
True
>>> is_binary_string(open('/usr/bin/dh_python3', 'rb').read(1024))
False
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What's the best way of structuring data on firebase?
...oin statements and queries.
You also want to denormalize in places where read efficiency is a concern. This is a technique used by all the large scale apps (e.g. Twitter and Facebook) and although it goes against our DRY principles, it's generally a necessary feature of scalable apps.
The gist he...
Unable to evaluate expression because the code is optimized or a native frame is on top of the call
... use the Response.End, Response.Redirect, or Server.Transfer
method, a ThreadAbortException exception occurs. You can use a
try-catch statement to catch this exception.
Cause
The Response.End method ends the page execution and shifts the
execution to the Application_EndRequest event in t...
Algorithm to compare two images
...o results.
Zipping
Ow's answer in this question is excellent, I remember reading about these sort of techniques studying AI. It is quite effective at comparing corpus lexicons.
One interesting optimisation when comparing corpuses is that you can remove words considered to be too common, for examp...
Linear Layout and weight in Android
I always read about this funny weight value in the Android documentations.
Now I want to try it for the first time but it isn't working at all.
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Nested using statements in C#
...n opening brace { after the last using statement, like this:
using (StreamReader outFile = new StreamReader(outputFile.OpenRead()))
using (StreamReader expFile = new StreamReader(expectedFile.OpenRead()))
{
///...
}
s...