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How is Racket different from Scheme?
Racket is a descendant of Scheme. How is Racket different than R6RS? What did it add, or take away, or is just different?
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Avoiding SQL injection without parameters
We are having another discussion here at work about using parametrized sql queries in our code. We have two sides in the discussion: Me and some others that say we should always use parameters to safeguard against sql injections and the other guys that don't think it is necessary. Instead they want ...
Creating an R dataframe row-by-row
I would like to construct a dataframe row-by-row in R. I've done some searching, and all I came up with is the suggestion to create an empty list, keep a list index scalar, then each time add to the list a single-row dataframe and advance the list index by one. Finally, do.call(rbind,) on the list...
MySQL - UPDATE query based on SELECT Query
I need to check (from the same table) if there is an association between two events based on date-time.
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How to split long commands over multiple lines in PowerShell
How do you take a command like the following in PowerShell and split it across multiple lines?
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How to “crop” a rectangular image into a square with CSS?
I know that it is impossible to actually modify an image with CSS, which is why I put crop in quotes.
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What is the proper way to re-attach detached objects in Hibernate?
I have a situation in which I need to re-attach detached objects to a hibernate session, although an object of the same identity MAY already exist in the session, which will cause errors.
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Creating a Pandas DataFrame from a Numpy array: How do I specify the index column and column headers
I have a Numpy array consisting of a list of lists, representing a two-dimensional array with row labels and column names as shown below:
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Usage of forceLayout(), requestLayout() and invalidate()
I'm a bit confused about the roles of forceLayout() , requestLayout() and invalidate() methods of the View class.
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Check if a string contains an element from a list (of strings)
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