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How to check for the type of a template parameter?
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One quick follow-up, if I do use std::is_same, then it will NOT slow down the code for other template parameters, right?
– WhatABeautifulWorld
Nov 30 '12 at 17:04
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CSS Progress Circle [closed]
I have searched this website to find progress bars, but the ones I have been able to found show animated circles that go to the full 100%.
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What is a reasonable order of Java modifiers (abstract, final, public, static, etc.)?
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The customary usage order of the modifiers is mentioned in the Java Language Specification (and not the Java Virtual Machine Specification) e.g. for class modifiers you will find the following definition (extract):
ClassModifiers:
ClassModifier
ClassModifiers ClassMo...
How to frame two for loops in list comprehension python
...ries if tag in entry]
The order of the loops in the LC is similar to the ones in nested loops, the if statements go to the end and the conditional expressions go in the beginning, something like
[a if a else b for a in sequence]
See the Demo -
>>> tags = [u'man', u'you', u'are', u'aw...
What's the difference between String(value) vs value.toString()
...hould has a .valueOf() function defined in it.
what if we have both in one object?
if we want to treat this object as a string => use .toString()
if we want to treat this object as a number => use .valueOf()
what if we only have .valueOf() defined?
.valueOf() defined inside t...
How to put a label on an issue in GitHub if you are not a contributor / owner?
...ues into categories. They can help you to mark priority and such. If everyone were allowed to label their issues, this structure would be lost.
– Noctua
Dec 11 '12 at 22:26
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Can I make fast forwarding be off by default in git?
...bing; but instead of starting with small cliffs and progressing to tougher ones, git makes you climb the same mountain again and again, only to fall at different heights each time, every time just as surprised that the lifeline wasn't attached.
– conny
Mar 23 '...
How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
...I was copying the data from a set of staging tables with many columns into one table while also assigning row ids to the target table. Here is a variant of the above approaches that I used.
I added the serial column at the end of my target table. That way I don't have to have a placeholder for it i...
What is the Scala annotation to ensure a tail recursive function is optimized?
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I hate being the nit picky one, but in your example in the Nil case you should return tally for a correct list length function otherwise you will always get 0 as a return value when the recursion finishes.
– Lucian Enache
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Mean per group in a data.frame [duplicate]
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I describe two ways to do this, one based on data.table and the other based on reshape2 package . The data.table way already has an answer, but I have tried to make it cleaner and more detailed.
The data is like this:
d <- structure(list(Name = struc...