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How can I check if a file exists in Perl?
...r something exists at 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 ...
In Rails - is there a rails method to convert newlines to ?
Is there a Railsy way to convert \n to <br> ?
8 Answers
8
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Message 'src refspec master does not match any' when pushing commits in Git
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Maybe you just need to commit. I ran into this when I did:
mkdir repo && cd repo
git remote add origin /path/to/origin.git
git add .
Oops! Never committed!
git push -u origin master
error: src refspec master does not...
Initialization of an ArrayList in one line
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Actually, probably the "best" way to initialize the ArrayList is the method you wrote, as it does not need to create a new List in any way:
ArrayList<String> list = new ArrayList<String>();
list.add("A");
list.add("B");
list....
Alternative to google finance api [closed]
I wanted to use Google Finance API to get stock data about the company but this API is deprecated since 2011/26/05.
5 Answe...
How to RSYNC a single file?
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You do it the same way as you would a directory, but you specify the full path to the filename as the source. In your example:
rsync -avz --progress /var/www/public_html/.htaccess root@<remote-ip>:/var/www/public_html/
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Installing a dependency with Bower from URL and specify version
I am trying to install a dependency with Bower using a URL. As of Bower documentation:
10 Answers
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How do I find a default constraint using INFORMATION_SCHEMA?
... to test if a given default constraint exists. I don't want to use the sysobjects table, but the more standard INFORMATION_SCHEMA.
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What's the fastest way to do a bulk insert into Postgres?
...to programmatically insert 10's of millions of records into a postgres database. Presently I am executing 1000's of insert statements in a single "query".
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Use of Finalize/Dispose method in C#
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The recommended IDisposable pattern is here. When programming a class that uses IDisposable, generally you should use two patterns:
When implementing a sealed class that doesn't use unmanaged resources, you simply implement a Dispose method as with...