大约有 41,724 项符合查询结果(耗时:0.0201秒) [XML]
How do you validate a URL with a regular expression in Python?
I'm building an app on Google App Engine. I'm incredibly new to Python and have been beating my head against the following problem for the past 3 days.
...
Dynamically update values of a chartjs chart
I created an basic bar chart using chartjs and it works fine. Now I want to update the values on a time based interval. My problem is that after I created the chart, I do not know how to update its values correctly...
...
What does ||= (or-equals) mean in Ruby?
What does the following code mean in Ruby?
23 Answers
23
...
Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?
I am doing some numerical optimization on a scientific application. One thing I noticed is that GCC will optimize the call pow(a,2) by compiling it into a*a , but the call pow(a,6) is not optimized and will actually call the library function pow , which greatly slows down the performance. (In ...
Lodash - difference between .extend() / .assign() and .merge()
In the Lodash library, can someone provide a better explanation of merge and extend / assign .
5 Answers
...
How to test valid UUID/GUID?
How to check if variable contains valid UUID/GUID identifier?
12 Answers
12
...
RegEx for matching UK Postcodes
I'm after a regex that will validate a full complex UK postcode only within an input string. All of the uncommon postcode forms must be covered as well as the usual. For instance:
...
fastest MD5 Implementation in JavaScript
There are many MD5 JavaScript implementations out there.
Does anybody know which one is the most advanced, most bugfixed and fastest?
...
How do the post increment (i++) and pre increment (++i) operators work in Java?
Can you explain to me the output of this Java code?
14 Answers
14
...
What is a regular expression which will match a valid domain name without a subdomain?
I need to validate a domain name:
20 Answers
20
...
