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C++ static virtual members?
Is it possible in C++ to have a member function that is both static and virtual ? Apparently, there isn't a straightforward way to do it ( static virtual member(); is a compile error), but is there at least a way to achieve the same effect?
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What is the result of % in Python?
... (modulo) operator yields the remainder from the division of the first argument by the second. The numeric arguments are first converted to a common type. A zero right argument raises the ZeroDivisionError exception. The arguments may be floating point numbers, e.g., 3.14%0.7 equals 0.34 (since 3.14...
Comparing date part only without comparing time in JavaScript
...till learning JavaScript, and the only way that I've found which works for me to compare two dates without the time is to use the setHours method of the Date object and set the hours, minutes, seconds and milliseconds to zero. Then compare the two dates.
For example,
date1 = new Date()
date2 = new...
Is it possible to read from a InputStream with a timeout?
Specifically, the problem is to write a method like this:
8 Answers
8
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setup.py examples?
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Complete walkthrough of writing setup.py scripts here. (with some examples)
If you'd like a real-world example, I could point you towards the setup.py scripts of a couple major projects. Django's is here, pyglet's is here. You can just browse the source of other projects for a file name...
Why is volatile needed in C?
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Let's say you have a little piece of hardware that is mapped into RAM somewhere and that has two addresses: a command port and a data port:
typedef struct
{
int command;
int data;
int isbusy;
} MyHardwareGadget;
Now you want to send some command:
void SendCommand (MyHardwareGadget * gad...
Simplest way to serve static data from outside the application server in a Java web application
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I've seen some suggestions like having the image directory being a symbolic link pointing to a directory outside the web container, but will this approach work both on Windows and *nix environments?
If you adhere the *nix filesystem pat...
Why use 'virtual' for class properties in Entity Framework model definitions?
...blog: http://weblogs.asp.net/scottgu/archive/2010/07/16/code-first-development-with-entity-framework-4.aspx
7 Answers
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How can I check that a form field is prefilled correctly using capybara?
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You can use an xpath query to check if there's an input element with a particular value (e.g. 'John'):
expect(page).to have_xpath("//input[@value='John']")
See http://www.w3schools.com/xpath/xpath_syntax.asp for more info.
For perhaps a prettier way:
expect(find_field('Your name...
What is the difference between currying and partial application?
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Currying is converting a single function of n arguments into n functions with a single argument each. Given the following function:
function f(x,y,z) { z(x(y));}
When curried, becomes:
function f(x) { lambda(y) { lambda(z) { z(x(y)); } } }
In order to get the full appl...