大约有 15,000 项符合查询结果（耗时：0.0417秒） [XML]
What are the most-used vim commands/keypresses?
I'm a Ruby programming trying to switch from Textmate to MacVim, and I'm having trouble wading through the gargantuan lists of things you can do in VIM and all of the keypresses for them. I'm tired of hearing "You can use 'I' for inserting text, or 'a' for appending text after the character, or 'A' ...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...你调试一下，或是你把14行的printf语句改成：printf("%x\n", f.a->s);复制代码
你会看到程序不crash了。程序输出：4。 这下你知道了，访问0x4的内存地址，不crash才怪。于是，你一定会有如下的问题：1）为什么不是 13行if语句...
d3 axis labeling
How do I add text labels to axes in d3?
6 Answers
6
...
How to check if a String contains another String in a case insensitive manner in Java?
...
Yes, contains is case sensitive. You can use java.util.regex.Pattern with the CASE_INSENSITIVE flag for case insensitive matching:
Pattern.compile(Pattern.quote(wantedStr), Pattern.CASE_INSENSITIVE).matcher(source).find();
EDIT: If s2 contains regex special characters (of which th...
How do I detect the Python version at runtime? [duplicate]
I have a Python file which might have to support Python versions < 3.x and >= 3.x. Is there a way to introspect the Python runtime to know the version which it is running (for example, 2.6 or 3.2.x )?
...
CSS: Change image src on img:hover
...e background as like
div {
background: url('http://dummyimage.com/100x100/000/fff');
}
div:hover {
background: url('http://dummyimage.com/100x100/eb00eb/fff');
}
And if you think you can use some javascript code then you should be able to change the src of the img tag as below
funct...
Write bytes to file
I have a hexadecimal string (e.g 0CFE9E69271557822FE715A8B3E564BE ) and I want to write it to a file as bytes. For example,
...
Change size of axes title and labels in ggplot2
...
You can change axis text and label size with arguments axis.text= and axis.title= in function theme(). If you need, for example, change only x axis title size, then use axis.title.x=.
g+theme(axis.text=element_text(size=12),
axis.ti...
What is “Orthogonality”?
...hogonality is the property that means "Changing A does not change B". An example of an orthogonal system would be a radio, where changing the station does not change the volume and vice-versa.
A non-orthogonal system would be like a helicopter where changing the speed can change the direction.
...
How to convert an int to string in C?
...se itoa() function to convert your integer value to a string.
Here is an example:
int num = 321;
char snum[5];
// convert 123 to string [buf]
itoa(num, snum, 10);
// print our string
printf("%s\n", snum);
If you want to output your structure into a file there is no need to convert any value ...