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Explain the use of a bit vector for determining if all characters are unique
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Adding 'serial' to existing column in Postgres
...imary key) which currently contains unique sequential integers starting at 1, but which was not created using the 'serial' keyword.
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What is the performance of Objects/Arrays in JavaScript? (specifically for Google V8)
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I create...
Are tuples more efficient than lists in Python?
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The dis module disassembles the byte code for a function and is useful to see the difference b...
Pandas percentage of total with groupby
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Git: Cannot see new remote branch
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First, double check that the branch has been actually pushed remotely, by using the command gi...
Rolling back local and remote git repository by 1 commit
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Background image jumps when address bar hides iOS/Android/Mobile Chrome
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How can I check if character in a string is a letter? (Python)
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You can use str.isalpha().
For example:
s = 'a123b'
for char in s:
print(char, char.isa...