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What's the difference between backtracking and depth first search?
...construct all search outcomes, even the ones, that do not make sense practically. This can be also very inefficient to construct all solutions (n! or 2^n). So in reality as you do DFS, you need to also prune partial solutions, which do not make sense in context of the actual task, and focus on the p...
Please explain some of Paul Graham's points on Lisp
...Lisp programmers to register their functions as compiler plugins of sorts, called macros in Lisp? And indeed any decent Lisp system has this capacity.
So, macros are regular Lisp functions operating on the programme's representation at compile time, before the final compilation phase when actual obj...
Bash: infinite sleep (infinite blocking)
...o /dev/null make tail loop. (On my Ubuntu64 16.10 this adds several 10 syscalls per second on an already busy system.)
The question was for a blocking command
Unfortunately, there is no such thing ..
Read: I do not know any way to archive this with the shell directly.
Everything (even sleep inf...
How to set a JavaScript breakpoint from code in Chrome?
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You can also use debug(function), to break when function is called.
Command Line API Reference: debug
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How to fix java.net.SocketException: Broken pipe?
I am using apache commons http client to call url using post method to post the parameters and it is throwing the below error rarely.
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Java: when to use static methods
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One rule-of-thumb: ask yourself "Does it make sense to call this method, even if no object has been constructed yet?" If so, it should definitely be static.
So in a class Car you might have a method:
double convertMpgToKpl(double mpg)
...which would be static, because one mi...
Are iframes considered 'bad practice'? [closed]
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Based on my experience a positive side for iframe are when calling third party codes, that may involve calling a javascript that calls a has a Document.write(); command. As you may know, these commands cannot be called asynchronously due to how it is parsed (DOM Parser etc). An examp...
Is it possible to specify condition in Count()?
...y old, but I like the NULLIF trick for such scenarios, and I found no downsides so far. Just see my copy&pasteable example, which is not very practical though, but demonstrates how to use it.
NULLIF might give you a small negative impact on performance, but I guess it should still be faster tha...
When to use static vs instantiated classes
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So basically use objects when working with unique things like a photo, user, post etc and use static when its meant for general things?
– Robert Rocha
Apr 2 '16 at 21:29
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What is the difference between printf() and puts() in C?
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puts is simpler than printf but be aware that the former automatically appends a newline. If that's not what you want, you can fputs your string to stdout or use printf.
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