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How to escape the % (percent) sign in C's printf?
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You can escape it by posting a double '%' like this: %%
Using your example:
printf("hello%%");
Escaping '%' sign is only for printf. If you do:
char a[5];
strcpy(a, "%%");
printf("This is a's value: %s\n", a);
It will print: This is ...
Check if character is number?
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You could use comparison operators to see if it is in the range of digit characters:
var c = justPrices[i].substr(commapos+2,1);
if (c >= '0' && c <= '9') {
// it is a number
} else {
// it isn't
}
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Trigger 404 in Spring-MVC controller?
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Since Spring 3.0 you also can throw an Exception declared with @ResponseStatus annotation:
@ResponseStatus(value = HttpStatus.NOT_FOUND)
public class ResourceNotFoundException extends RuntimeException {
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}
@Controller
public class SomeController {
@RequestMapping.....
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What's an Aggregate Root?
I'm trying to get my head around how to properly use the repository pattern. The central concept of an Aggregate Root keeps coming up. When searching both the web and Stack Overflow for help with what an aggregate root is, I keep finding discussions about them and dead links to pages that are suppos...
Expansion of variables inside single quotes in a command in Bash
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Inside single quotes everything is preserved literally, without exception.
That means you have to close the quotes, insert something, and then re-enter again.
'before'"$variable"'after'
'before'"'"'after'
'before'\''after'
Word concatenation is simply done by juxtapo...
How to swap the buffers in 2 windows emacs
...working on the buffer on the left side, calling 'buf-move-right' will swap it with the one on the right. I guess this is what you want.
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Adb Devices can't find my phone [closed]
...I have a Samsung Galaxy and I had the same issue as you. Here's how to fix it:
In device manager on your Windows PC, even though it might say the USB drivers are installed correctly, there may exist corruption.
I went into device manager and uninstalled SAMSUNG Android USB Composite Device and mad...
Is there a `pointer-events:hoverOnly` or similar in CSS?
Just been playing about with pointer-events property in CSS.
7 Answers
7
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Why is my Git Submodule HEAD detached from master?
I am using Git submodules. After pulling changes from server, many times my submodule head gets detached from master branch.
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node.js global variables?
I asked here:
node.js require inheritance?
6 Answers
6
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