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Combine two or more columns in a dataframe into a new column with a new name
...t for example is like: A - B instead of A-B. Is it possible to remove this extra space?
– Chetan Arvind Patil
Oct 6 '17 at 2:35
9
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How can I get Express to output nicely formatted HTML?
...s a "pretty" option in Jade itself:
var jade = require("jade");
var jade_string = [
"!!! 5",
"html",
" body",
" #foo I am a foo div!"
].join("\n");
var fn = jade.compile(jade_string, { pretty: true });
console.log( fn() );
...gets you this:
<!DOCTYPE html>
<...
What is the difference between the GNU Makefile variable assignments =, ?=, := and +=?
...iving a value like *.c does not entail any expansion. It is only when this string is used by a command that it will maybe trigger some globbing. Similarly, a value like $(wildcard *.c) or $(shell ls *.c) does not entail any expansion and is completely evaluated at definition time even if we used := ...
SetUnhandledExceptionFilter and the C/C++ Runtime Library - C/C++ - 清...
...ler);
std::cout << "Normal null pointer crash" << std::endl;
char *p = 0;
*p = 5;
}
The program should then display:
Normal null pointer crash
Gotcha!
The C/C++ Runtime Library
The C/C++ Runtime Library will remove any custom crash handler in certain circumstances, and our...
Should I put the Google Analytics JS in the or at the end of ?
... near the top of the tag and before any other script or CSS tags, and the string 'UA-XXXXX-Y' should be replaced with the property ID (also called the "tracking ID") of the Google Analytics property you wish to track.
<!-- Google Analytics -->
<script>
(function(i,s,o,g,r,a,m){i[...
See all breakpoints in Visual Studio 2010+
... edited Jun 3 '14 at 15:40
char1es
33333 silver badges1717 bronze badges
answered Oct 16 '11 at 8:09
Taru...
How do I horizontally center an absolute positioned element inside a 100% width div? [duplicate]
...ent. Now magic happens when margin is set to auto. margin takes up all the extra space(equally on each side) leaving the content to its specified width. This results in content becoming center aligned.
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annotation to make a private method public only for test classes [duplicate]
...uts extra burden on the programmer to remember if refactoring is done, the strings aren't automatically changed, but I think it's the cleanest approach.
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How to send a “multipart/form-data” with requests in python?
... and additional headers for each part by using a tuple instead of a single string or bytes object. The tuple is expected to contain between 2 and 4 elements; the filename, the content, optionally a content type, and an optional dictionary of further headers.
I'd use the tuple form with None as the ...
SQL - many-to-many table primary key
... index, on (col1, col2) also handles the 'both' case). The downside is the extra storage needed for the extra column. This is usually not significant, so the advice is far from awful. Nevertheless, if col1 and col2 are big or of very different sizes, you can save yourself some space without hurting ...