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How does a public key verify a signature?
...e on how public/private keys work. I understand that a sender may add a digital signature to a document using his/her private key to essentially obtain a hash of the document, but what I do not understand is how the public key can be used to verify that signature.
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Why can Java Collections not directly store Primitives types?
Java collections only store Objects, not primitive types; however we can store the wrapper classes.
7 Answers
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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...
Ruby on Rails - Import Data from a CSV file
...tabase table. I do not want to save the CSV file, just take the data from it and put it into the existing table. I am using Ruby 1.9.2 and Rails 3.
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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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Undo a Git merge that hasn't been pushed yet
Within my master branch, I did a git merge some-other-branch locally, but never pushed the changes to origin master. I didn't mean to merge, so I'd like to undo it. When doing a git status after my merge, I was getting this message:
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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
It seems to me like the files run the same without that line.
21 Answers
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Best way to parse RSS/Atom feeds with PHP [closed]
I'm currently using Magpie RSS but it sometimes falls over when the RSS or Atom feed isn't well formed. Are there any other options for parsing RSS and Atom feeds with PHP?
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How to convert Linux cron jobs to “the Amazon way”?
...eb application from dedicated machines to the cloud (Amazon EC2 machines). It's going great so far but the way we do crons is sub-optimal. I have a Amazon-specific question about how to best manage cron jobs in the cloud using "the Amazon way".
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Function return value in PowerShell
...hat performs a number of actions involving provisioning SharePoint Team sites. Ultimately, I want the function to return the URL of the provisioned site as a String so at the end of my function I have the following code:
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