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Traversing text in Insert mode
...le in Insert Mode in Vim, is there any way to traverse the text moving some characters forward and backward other than using the arrow keys?
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How do you debug a regex? [closed]
Regular expressions can become quite complex. The lack of white space makes them difficult to read. I can't step though a regular expression with a debugger. So how do experts debug complex regular expressions?
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How to take screenshot with Selenium WebDriver
...LE);
// Now you can do whatever you need to do with it, for example copy somewhere
FileUtils.copyFile(scrFile, new File("c:\\tmp\\screenshot.png"));
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How to set up a PostgreSQL database in Django
...'default': {
'ENGINE': 'django.db.backends.postgresql',
'NAME': 'db_name',
'USER': 'db_user',
'PASSWORD': 'db_user_password',
'HOST': '',
'PORT': 'db_port_number',
}
}
- Other installation instructions can be found at down...
Completion block for popViewController
... doesn't offer any options for this. However by using the CoreAnimation framework it's possible to add a completion block to the underlying animation:
[CATransaction begin];
[CATransaction setCompletionBlock:^{
// handle completion here
}];
[self.navigationController popViewControllerAnimated:...
Visual Studio keyboard shortcut to automatically add the needed 'using' statement
... is the keyboard shortcut to expand the little red line that gives you the menu where you can choose to have the necessary using statement added to the top of the file?
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How do you set the startup page for debugging in an ASP.NET MVC application?
...rt page, and then debug your project. This will take you to the main "Welcome to ASP.NET MVC!" page.
– atconway
May 4 '12 at 17:38
3
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How to test an Internet connection with bash?
How can an internet connection be tested without pinging some website?
I mean, what if there is a connection but the site is down? Is there a check for a connection with the world?
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Bogus foreign key constraint fail
I get this error message:
9 Answers
9
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Force R not to use exponential notation (e.g. e+10)?
... bit of a grey area. You need to recall that R will always invoke a print method, and these print methods listen to some options. Including 'scipen' -- a penalty for scientific display. From help(options):
‘scipen’: integer. A penalty to be applied when deciding to print
numer...