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Will strlen be calculated multiple times if used in a loop condition?
...optimiser might be able to deduce that the value won't change, but I personally wouldn't rely on that.
I'd do something like
for (int i = 0, n = strlen(ss); i < n; ++i)
or possibly
for (int i = 0; ss[i]; ++i)
as long as the string isn't going to change length during the iteration. If it mi...
No secret option provided to Rack::Session::Cookie warning?
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Update your rails gems as this is backported to all supported rails gems. note @henrik-n
– shadowbq
Feb 4 '13 at 11:14
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Why do we not have a virtual constructor in C++?
...e and Technique FAQ Why don't we have virtual constructors?
A virtual call is a mechanism to get work done given partial
information. In particular, "virtual" allows us to call a function
knowing only any interfaces and not the exact type of the object. To
create an object you need complet...
Setup a Git server with msysgit on Windows [closed]
.../web/20100207010332/http://www.timdavis.com.au/…
– alldayremix
Dec 1 '12 at 5:01
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Disable building workspace process in Eclipse
...space.
You can also disable it through the menu "Project / Build automatically".
But I would recommend first to check:
if a Project Clean all / Build result in the same kind of long wait (after disabling this option)
if you have (this time with building automatically activated) some validation o...
What is the purpose of static keyword in array parameter of function like “char s[static 10]”?
...Note that the C Standard does not require the compiler to diagnose when a call to the function does not meet these requirements (i.e., it is silent undefined behaviour).
The second declaration simply declares someArray (not someArray's elements!) as const, i.e., you can not write someArray=someOthe...
git push says “everything up-to-date” even though I have local changes
..., like this:
$ git checkout v2.6.18
Earlier versions of git did not allow this and asked you to create a temporary branch using the -b option, but starting from version 1.5.0, the above command detaches your HEAD from the current branch and directly points at the commit named by the tag (v2.6...
What is the 'cls' variable used for in Python classes?
...her details.
EDIT: As clarified by Adrien, it's a convention. You can actually use anything but cls and self are used (PEP8).
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Collection versus List what should you use on your interfaces?
...king interface change (of course changing the semantics of things like not allowing null may also be an interface change, but things like updating your internal class state would not be).
So by returning either a class that can be easily subclassed such as Collection<T> or an interface such a...
Remove a character from the end of a variable
...hich is de facto in linux distribution and in this case users may have installed different external packages which can break the portability
– amenzhinsky
Jul 11 '14 at 8:46
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