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What is the difference between float and double?
...ost cases, float and double seem to be interchangeable, i.e. using one or the other does not seem to affect the results. Is this really the case? When are floats and doubles interchangeable? What are the differences between them?
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What is the correct answer for cout
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You can think of:
cout << a++ << a;
As:
std::operator<<(std::operator<<(std::cout, a++), a);
C++ guarantees that all side effects of previous evaluations will have been performed at sequence points. There are no sequence points in between function arguments eval...
Choose newline character in Notepad++
...ill recognize and use whatever the newline character in that file is, \n or \r\n .
3 Answers
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How do I find the duplicates in a list and create another list with them?
...et(a). To print duplicates, something like:
a = [1,2,3,2,1,5,6,5,5,5]
import collections
print([item for item, count in collections.Counter(a).items() if count > 1])
## [1, 2, 5]
Note that Counter is not particularly efficient (timings) and probably overkill here. set will perform better. Th...
How to pass macro definition from “make” command line arguments (-D) to C source code?
... and make does not allow this. You could use "CFLAGS := $(CFLAGS) -Wall", or "CFLAGS += -Wall", but those won't work either because an assignment on the command line has a higher precedence. You could use "override CFLAGS += -Wall", but generally we recommend you just choose different variables in...
finding the type of an element using jQuery
... reference to an element, how can I determine what kind of element it is, for example, an input or an dropdown? Is there any way to find out?
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How do I call Objective-C code from Swift?
...ses in Swift
If you have an existing class that you'd like to use, perform Step 2 and then skip to Step 5. (For some cases, I had to add an explicit #import <Foundation/Foundation.h to an older Objective-C File.)
Step 1: Add Objective-C Implementation -- .m
Add a .m file to your class, and...
How to resize an image with OpenCV2.0 and Python2.6
...Python2.6 to show resized images. I used and adopted this example but unfortunately, this code is for OpenCV2.1 and does not seem to be working on 2.0. Here my code:
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android TextView: setting the background color dynamically doesn't work
Setting the background color programatically of an android TextView doesn't seem to work.
I'm I missing something!
14 Ans...
How to parse XML in Bash?
...his much editing should be done to someone else, and comments don't allow formatting, so...
rdom () { local IFS=\> ; read -d \< E C ;}
Let's call that "read_dom" instead of "rdom", space it out a bit and use longer variables:
read_dom () {
local IFS=\>
read -d \< ENTITY CONTE...