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How can I round a number in JavaScript? .toFixed() returns a string?
... (at least not with full accuracy) in binary floating-point systems.
For example, 0.1 is really 0.1000000000000000055511151231257827021181583404541015625, and 0.01 is really 0.01000000000000000020816681711721685132943093776702880859375. (Thanks to BigDecimal for proving my point. :-P)
Therefore (a...
Webdriver Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms
I have box where I run tests. It seems like Jenkins would ssh in and execute commands described in the specific job that's running.
...
How to determine CPU and memory consumption from inside a process?
...rn codes...!
Total Virtual Memory:
#include "windows.h"
MEMORYSTATUSEX memInfo;
memInfo.dwLength = sizeof(MEMORYSTATUSEX);
GlobalMemoryStatusEx(&memInfo);
DWORDLONG totalVirtualMem = memInfo.ullTotalPageFile;
Note: The name "TotalPageFile" is a bit misleading here. In reality this parame...
Is bool a native C type?
I've noticed that the Linux kernel code uses bool, but I thought that bool was a C++ type. Is bool a standard C extension (e.g., ISO C90) or a GCC extension?
...
Why is the shovel operator (
... #=> 2154889340
a << 'bar'
a.object_id #=> 2154889340
a += 'quux'
a.object_id #=> 2154742560
So << alters the original string rather than creating a new one. The reason for this is that in ruby a += b is syntactic shorthand for a = a + b (the same goes for the other <op>...
HTTP POST using JSON in Java
... request
Create an HttpPost request with it and add the header application/x-www-form-urlencoded
Create a StringEntity that you will pass JSON to it
Execute the call
The code roughly looks like (you will still need to debug it and make it work):
// @Deprecated HttpClient httpClient = new DefaultHtt...
How do I check for C++11 support?
... at compile-time if the compiler supports certain features of C++11? For example, something like this:
8 Answers
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Can you grab or delete between parentheses in vi/vim?
...his works because % is a "motion command", so it can be used anywhere vim expects such a command. From :help y:
["x]y{motion} Yank {motion} text [into register x]. When no
characters are to be yanked (e.g., "y0" in column 1),
this is an error when 'cpo...
Arrow operator (->) usage in C
...he chapter on pointers and the -> (arrow) operator came up without explanation. I think that it is used to call members and functions (like the equivalent of the . (dot) operator, but for pointers instead of members). But I am not entirely sure.
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In C++, is it still bad practice to return a vector from a function?
...rrays—in many programming languages. Is this style now acceptable in C++0x if the class has a move constructor, or do C++ programmers consider it weird/ugly/abomination?
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