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How can I sanitize user input with PHP?
Is there a catchall function somewhere that works well for sanitizing user input for SQL injection and XSS attacks, while still allowing certain types of HTML tags?
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Generating all permutations of a given string
What is an elegant way to find all the permutations of a string. E.g. permutation for ba , would be ba and ab , but what about longer string such as abcdefgh ? Is there any Java implementation example?
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Regex for password must contain at least eight characters, at least one number and both lower and up
I want a regular expression to check that:
31 Answers
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Cartesian product of x and y array points into single array of 2D points
I have two numpy arrays that define the x and y axes of a grid. For example:
13 Answers
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Convert SVG to image (JPEG, PNG, etc.) in the browser
I want to convert SVG into bitmap images (like JPEG, PNG, etc.) through JavaScript.
9 Answers
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In SQL, how can you “group by” in ranges?
Suppose I have a table with a numeric column (lets call it "score").
15 Answers
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Scoping in Python 'for' loops
I'm not asking about Python's scoping rules; I understand generally how scoping works in Python for loops. My question is why the design decisions were made in this way. For example (no pun intended):
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How do I force a UITextView to scroll to the top every time I change the text?
OK, I'm having some problem with the UITextView . Here's the issue:
37 Answers
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Detect if a NumPy array contains at least one non-numeric value?
I need to write a function which will detect if the input contains at least one value which is non-numeric. If a non-numeric value is found I will raise an error (because the calculation should only return a numeric value). The number of dimensions of the input array is not known in advance - the fu...
Why not abstract fields?
Why can't Java classes have abstract fields like they can have abstract methods?
5 Answers
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