大约有 4,768 项符合查询结果（耗时：0.0267秒） [XML]
Swapping two variable value without using third variable
One of the very tricky questions asked in an interview.
27 Answers
27
...
NOW() function in PHP
...e a PHP function that returns the date and time in the same format as the MySQL function NOW() ?
20 Answers
...
How to smooth a curve in the right way?
Lets assume we have a dataset which might be given approximately by
9 Answers
9
...
How to add texture to fill colors in ggplot2
I'm currently using scale_brewer() for fill and these look beautiful in color (on screen and via color printer) but print relatively uniformly as greys when using a black and white printer. I searched the online ggplot2 documentation but didn't see anything about adding textures to fill colors. ...
Does the ternary operator exist in R?
... the question asks, is there a control sequence in R similar to C's ternary operator ? If so, how do you use it? Thanks!
7...
Passing functions with arguments to another function in Python?
Is it possible to pass functions with arguments to another function in Python?
7 Answers
...
Python: reload component Y imported with 'from X import Y'?
In Python, once I have imported a module X in an interpreter session using import X , and the module changes on the outside, I can reload the module with reload(X) . The changes then become available in my interpreter session.
...
How to succinctly write a formula with many variables from a data frame?
... I have a response variable and a data containing three covariates (as a toy example):
6 Answers
...
HTML5 canvas ctx.fillText won't do line breaks?
...llText. There is no multi-line support. Whats worse, there's no built-in way to measure line height, only width, making doing it yourself even harder!
A lot of people have written their own multi-line support, perhaps the most notable project that has is Mozilla Skywriter.
The gist of what you'll ...
Shortest distance between a point and a line segment
... between a point and a line segment. Feel free to write the solution in any language you want; I can translate it into what I'm using (Javascript).
...