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What are good uses for Python3's “Function Annotations”
Function Annotations: PEP-3107
12 Answers
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What is the difference between printf() and puts() in C?
I know you can print with printf() and puts() . I can also see that printf() allows you to interpolate variables and do formatting.
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How to add column if not exists on PostgreSQL?
Question is simple. How to add column x to table y , but only when x column doesn't exist ? I found only solution here how to check if column exists.
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CSS3's border-radius property and border-collapse:collapse don't mix. How can I use border-radius to
Edit - Original Title: Is there an alternative way to achieve border-collapse:collapse in CSS (in order to have a collapsed, rounded corner table)?
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Efficiently convert rows to columns in sql server
I'm looking for an efficient way to convert rows to columns in SQL server, I heard that PIVOT is not very fast, and I need to deal with lot of records.
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Is there an expression for an infinite generator?
Is there a straight-forward generator expression that can yield infinite elements?
7 Answers
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List of all special characters that need to be escaped in a regex
I am trying to create an application that matches a message template with a message that a user is trying to send. I am using Java regex for matching the message. The template/message may contain special characters.
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How should I copy Strings in Java?
At this point, the backup variable still contains the original value "hello" (this is because of String's immutability right?).
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Or versus OrElse
What's the difference between or and OrElse ?
8 Answers
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How to append text to an existing file in Java?
I need to append text repeatedly to an existing file in Java. How do I do that?
31 Answers
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