大约有 45,000 项符合查询结果（耗时：0.0848秒） [XML]
How can I check if a file exists in Perl?
... given path using the -e file-test operator.
print "$base_path exists!\n" if -e $base_path;
However, this test is probably broader than you intend. The code above will generate output if a plain file exists at that path, but it will also fire for a directory, a named pipe, a symlink, or a more ex...
“Unable to find remote helper for 'https'” during git clone
...ot having (lib)curl-devel installed when you compile git can cause this.
If you install (lib)curl-devel, and then rebuild/install git, this should solve the problem:
$ yum install curl-devel
$ # cd to wherever the source for git is
$ cd /usr/local/src/git-1.7.9
$ ./configure
$ make
$ make insta...
Is there a way to get version from package.json in nodejs code?
...n.version);
A warning, courtesy of @Pathogen:
Doing this with Browserify has security implications.
Be careful not to expose your package.json to the client, as it means that all your dependency version numbers, build and test commands and more are sent to the client.
If you're building se...
“/usr/bin/ld: cannot find -lz”
...
If this doesn't work, try the static version zlib-static.
– DearVolt
Jun 27 '17 at 13:53
3
...
How to convert “camelCase” to “Camel Case”?
...
Also adding: if you have an all caps acronym that you want to keep together you can change the first regex to "/([A-Z][a-z])/"
– jackfrster
Jun 8 '16 at 0:10
...
UITableView row animation duration and completion callback
Is there a way to either specify the duration for UITableView row animations, or to get a callback when the animation completes?
...
How to find encoding of a file via script on Linux?
...ears to be completely useless for analyzing a file written in English, but if you happen to be looking at something in Estonian, it might solve all your problems. Very helpful tool, that... </sarcasm>
– cbmanica
Apr 16 '13 at 20:36
...
Undo git update-index --skip-worktree
...
If you want to undo all files that was applied skip worktree, you can use the following command:
git ls-files -v | grep -i ^S | cut -c 3- | tr '\012' '\000' | xargs -0 git update-index --no-skip-worktree
git ls-files -v w...
How do you print out a stack trace to the console/log in Cocoa?
...
n13's answer didn't quite work - I modified it slightly to come up with this
#import <UIKit/UIKit.h>
#import "AppDelegate.h"
int main(int argc, char *argv[])
{
@autoreleasepool {
int retval;
@try{
retval = UIApplicationMai...
How to get started on TDD with Ruby on Rails? [closed]
...cations.
Also Railscast has some excellent screencasts about how to use different testing tools.
What do I need to test?
I will start with models, since they are easy to test. The simple rule is that you need to cover every if statement in your test.
You should test the purpose of the meth...