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Days between two dates? [duplicate]
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241
Assuming you’ve literally got two date objects, you can subtract one from the other and query ...
In Typescript, How to check if a string is Numeric
...y to convert a string to a number is with Number, not parseFloat.
Number('1234') // 1234
Number('9BX9') // NaN
You can also use the unary plus operator if you like shorthand:
+'1234' // 1234
+'9BX9' // NaN
Be careful when checking against NaN (the operator === and !== don't work as expected wi...
Python assigning multiple variables to same value? list behavior
... and Chris Wallace have a hot dog. If you change the first element of a to 1, the first elements of b and c are 1.
If you want to know if two names are naming the same object, use the is operator:
>>> a=b=c=[0,3,5]
>>> a is b
True
You then ask:
what is different from this...
Write bytes to file
I have a hexadecimal string (e.g 0CFE9E69271557822FE715A8B3E564BE ) and I want to write it to a file as bytes. For example,
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How to change plot background color?
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You created a figure and axis/es together
fig, ax = plt.subplots(nrows=1, ncols=1)
You created a figure, then axis/es later
fig = plt.figure()
ax = fig.add_subplot(1, 1, 1) # nrows, ncols, index
You used the stateful API (if you're doing anything more than a few lines, and especially if you h...
Convert Elixir string to integer or float
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154
Check Integer.parse/1 and Float.parse/1.
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How to get the seconds since epoch from the time + date output of gmtime()?
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126
If you got here because a search engine told you this is how to get the Unix timestamp, stop r...
Add subdomain to localhost URL
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142
Unfortunately, because localhost is not a proper domain, you can't add a subdomain to it like ...
Compare if BigDecimal is greater than zero
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416
It's as simple as:
if (value.compareTo(BigDecimal.ZERO) > 0)
The documentation for compar...