大约有 30,000 项符合查询结果(耗时:0.0495秒) [XML]
How to split a String by space
...plit parentheses should solve the issue. The Java String.split() method is based upon regular expressions so what you need is:
str = "Hello I'm your String";
String[] splitStr = str.split("\\s+");
share
|
...
How to convert a PIL Image into a numpy array?
...6
dF.dF.
64.2k2727 gold badges123123 silver badges134134 bronze badges
...
How to add a custom Ribbon tab using VBA?
...k" is the name of the procedure which runs when you click on the button.
Demo
With that, let's create 2 buttons and call them "JG Button 1" and "JG Button 2". Let's keep happy face as the image of the first one and let's keep the "Sun" for the second. The amended code now looks like this:
<cu...
What blocks Ruby, Python to get Javascript V8 speed? [closed]
...de and effectively it will be no such problem at all.
Consider ray-tracer demo that is frequently used demo for V8 demonstration. In Python world it can be implemented in native code as Python provides all facilities for native extensions. But in V8 realm (client side sandbox) you have no other opt...
What is the difference between #import and #include in Objective-C?
...
64
I agree with Jason.
I got caught out doing this:
#import <sys/time.h> // to use gettim...
How can I make the computer beep in C#?
...
I just tested in Win 7 x64 RC, and although the internal speaker didn't beep, there was a beep through speakers when I had them plugged in and on. I guess it's just the internal (mobo) speaker that won't beep. Thanks for the info @Lck.
...
R memory management / cannot allocate vector of size n Mb
...eate the object you need in one session.
If the above cannot help, get a 64-bit machine with as much RAM as you can afford, and install 64-bit R.
If you cannot do that there are many online services for remote computing.
If you cannot do that the memory-mapping tools like package ff (or bigmem...
What is data oriented design?
...ntities in your mental model of the problem. Since data is lumped together based on data usage, you won't always have sensible names to give your classes in Data Oriented Design.
Relation to relational databases
The thinking behind Data Oriented Design is very similar to how you think about relati...
Split comma-separated strings in a column into separate rows
... is the fastest1.
The benchmarked solutions include
Matthew Lundberg's base R approach but modified according to Rich Scriven's comment,
Jaap's two data.table methods and two dplyr / tidyr approaches,
Ananda's splitstackshapesolution,
and two additional variants of Jaap's data.table methods.
...
How to sparsely checkout only one single file from a git repository?
...it doesn't store files as you think (as CVS/SVN do), but it generates them based on the entire history of the project.
But there are some workarounds for specific cases. Examples below with placeholders for user, project, branch, filename.
GitHub
wget https://raw.githubusercontent.com/user/projec...