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Why do we need extern “C”{ #include } in C++?
...thing like this: #ifdef __cplusplus extern "C" { #endif So when included from a C++ file they are still treated as a C header.
– Calmarius
Mar 13 '17 at 12:58
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Set Django IntegerField by choices=… name
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FWIW, if you need set it from a literal string (perhaps from a form, user input, or similar) you can then just do: thing.priority = getattr(thing, strvalue.upper()).
– mrooney
Feb 24 '13 at 23:22
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Does Java casting introduce overhead? Why?
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There are 2 types of casting:
Implicit casting, when you cast from a type to a wider type, which is done automatically and there is no overhead:
String s = "Cast";
Object o = s; // implicit casting
Explicit casting, when you go from a wider type to a more narrow one. For this case, y...
Setting PayPal return URL and making it auto return?
...return in your PayPal account, otherwise it will ignore the return field.
From the documentation (updated to reflect new layout Jan 2019):
Auto Return is turned off by default.
To turn on Auto Return:
Log in to your PayPal account at https://www.paypal.com or https://www.sandbox.paypa...
How to remove only underline from a:before?
... remove this?
Yes, if you change the display style of the inline element from display:inline (the default) to display:inline-block:
#test p a:before {
color: #B2B2B2;
content: "► ";
display:inline-block;
}
This is because the CSS specs say:
When specified on or propagated to a...
A CORS POST request works from plain JavaScript, but why not with jQuery?
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Yes! thanks Will. I thought you could control everything from the client side, but it sounds like you need control of both ends.
– Elisabeth
Jul 9 '11 at 0:34
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How to remove stop words using nltk or python
So I have a dataset that I would like to remove stop words from using
12 Answers
12
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Difference between abstract class and interface in Python
...I don't know what "substantial" means. It's "real" -- it has substance -- from a design perspective. But from a language perspective there may be no support. You could adopt conventions to distinguish between an abstract class and an interface class definition in Python.
– S...
What does the unary plus operator do?
...r than the operator itself. For example, it can be used to force widening from smaller integral types to int, or ensure that an expression's result is treated as an rvalue and therefore not compatible with a non-const reference parameter. I submit, however, that these uses are better suited to cod...
Create a new cmd.exe window from within another cmd.exe prompt
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You can just type these 3 commands from command prompt:
start
start cmd
start cmd.exe
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