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Pandas conditional creation of a series/dataframe column
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List comprehension is another way to create another column conditionally. If you are working with object dtypes in columns, like in your example, list comprehensions typically outperform most other methods.
Example list comprehension:
df['color'] = ['red' if x == 'Z' else 'green' for x in d...
(![]+[])[+[]]… Explain why this works
... @rlemon, there's no int data type on the language, in fact all numbers are double-precision 64-bit format (IEEE 754 values), even though some operators work internally with Integer values (like the bitwise operators) the result is always a double. The 'i' comes in this example from u...
Validation failed for one or more entities. See 'EntityValidationErrors' property for more details [
... shows me that it's an array with 8 objects, so 8 validation errors.
Actually you should see the errors if you drill into that array in Visual studio during debug. But you can also catch the exception and then write out the errors to some logging store or the console:
try
{
// Your code...
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git log of a single revision
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That will give you the commit log, and then you'll have full control over all the git logging options for your automation purposes. In your instance you said you wanted the change-set. The most human-readable way to accomplish that would be:
git log --name-status --diff-filter="[A|C|D|M|R|T]" -1 -...
Web workers without a separate Javascript file?
...n tell, web workers need to be written in a separate JavaScript file, and called like this:
25 Answers
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How to increase space between dotted border dots
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What if I want all 4 edges dashed?
– Ryan Shillington
Jun 13 '18 at 13:53
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How to cast/convert pointer to reference in C++
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Call it like this:
foo(*ob);
Note that there is no casting going on here, as suggested in your question title. All we have done is de-referenced the pointer to the object which we then pass to the function.
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vim and NERD Tree extension - adding a file
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Any way to save a step, and automatically open the created file? Use the create option all the time, but 90% of time wish to start editing the file in a new buffer right after creation.
– arcseldon
Jan 27 '18 at 0:02
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Parsing boolean values with argparse
...True, default=False,
help="Activate nice mode.")
allows me to use:
script --nice
script --nice <bool>
and still use a default value (specific to the user settings). One (indirectly related) downside with that approach is that the 'nargs' might catch a positional ar...
How to align a div to the top of its parent but keeping its inline-block behaviour?
...ertical-align: top; to #boxContainer div selector. It applies the style to all div elements inside the boxContainer.
– MarthyM
Nov 3 '16 at 8:09
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