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add a string prefix to each value in a string column using Pandas
...ame({'col':['a', 0]*200000})
%timeit df['col'].apply(lambda x: f"str{x}")
117 ms ± 451 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)
%timeit 'str' + df['col'].astype(str)
112 ms ± 1.04 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)
Using format, however, is indeed far slo...
Apply CSS style attribute dynamically in Angular JS
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In fact this still doesnt work in IE11, I copied some code from a previous project and was confused when it didnt work, previous project was using Chrome
– csharpsql
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How can I clear the SQL Server query cache?
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JavaScript Nested function
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In PHP what does it mean by a function being binary-safe?
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Accessing UI (Main) Thread safely in WPF
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Case in Select Statement
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What are deferred objects?
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Extracting the last n characters from a string in R
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edited Nov 1 '11 at 12:30
answered Nov 1 '11 at 8:19
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