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Unable to copy ~/.ssh/id_rsa.pub
I’m following in Generating SSH Keys , it says
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Altering a column: null to not null
...Table] SET [Column]=0 WHERE [Column] IS NULL
Then, update the table definition to disallow "NULLs":
ALTER TABLE [Table] ALTER COLUMN [Column] INTEGER NOT NULL
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How to check if a String is numeric in Java
How would you check if a String was a number before parsing it?
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What's an easy way to read random line from a file in Unix command line?
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You can use shuf:
shuf -n 1 $FILE
There is also a utility called rl. In Debian it's in the randomize-lines package that does exactly what you want, though not available in all distros. On its home page it actually recommends the use of shuf instead (which didn't exist when it w...
How do I run NUnit in debug mode from Visual Studio?
I've recently been building a test framework for a bit of C# I've been working on. I have NUnit set up and a new project within my workspace to test the component. All works well if I load up my unit tests from Nunit (v2.4), but I've got to the point where it would be really useful to run in debug m...
What is a “feature flag”?
High Scalability mentions feature flags here:
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Measuring execution time of a function in C++
...ant to make a speed comparison . I saw several time function but ended up with this from boost. Chrono:
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How can I extract embedded fonts from a PDF as valid font files?
I'm aware of the pdftk.exe utility that can indicate which fonts are used by a PDF, and wether they are embedded or not.
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How do I replace text inside a div element?
I need to set the text within a DIV element dynamically. What is the best, browser safe approach? I have prototypejs and scriptaculous available.
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How do I get the path to the current script with Node.js?
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I found it after looking through the documentation again. What I was looking for were the __filename and __dirname module-level variables.
__filename is the file name of the current module. This is the resolved absolute path of the...