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Declaring abstract method in TypeScript
...ed to implement an abstract method as makeSound(input : number) : string { based on the above example where input should be a string. Type 'string' is not assignable to type 'number'..
– Fenton
Dec 6 '17 at 11:50
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Why can't I use a list as a dict key in python?
...ould just do that instead of relying on __hash__ and __eq__ to be identity-based.
– user395760
Aug 31 '11 at 13:45
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What is the size of column of int(11) in mysql in bytes?
... stored value of 250000 will show 250000
The actual value stored in database is not affected, the size is still the same, and any calculation will behave normally.
This also applies to BIGINT, MEDIUMINT, SMALLINT, and TINYINT.
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Reading specific lines only
...and you're on. Note that 4 would bring the fifth line as the count is zero-based.
If the file might be very large, and cause problems when read into memory, it might be a good idea to take @Alok's advice and use enumerate().
To Conclude:
Use fileobject.readlines() or for line in fileobject as a ...
Exif manipulation library for python [closed]
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Exiv2 Based solutions
Exiv2 (exiv2: http://exiv2.org/) is a mature, open-source C++ library that supports reading and writing metadata to many image types (JPEG, PNG, TIFF and many raw formats), understands standard (Xmp, IPTC and...
How do I set a background-color for the width of text, not the width of the entire element, using CS
...gn. This is just meant as a working starting point. Use carefully. Working demo on CodePen
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How many threads is too many?
...he request is received. I do this because almost every request makes a database query. I am using a threadpool library to cut down on construction/destruction of threads.
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What is “2's Complement”?
... 22 + 1 × 21 + 1 × 20and if you work it out, that turns out to equal 15 (base 10). That's because it is 8+4+2+1 = 15.
This is all well and good for positive numbers. It even works for negative numbers if you're willing to just stick a minus sign in front of them, as humans do with decimal nu...
Best practices for SQL varchar column length [closed]
...n UK are usually between 1-35 characters. If you decide to make it varchar(64), you're not really going to hurt anything... unless you're storing this guy's family name that's said to be up to 666 characters long. In that case, maybe varchar(1028) makes more sense.
And in case it's helpful, here's ...
What does pylint's “Too few public methods” message mean
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"""base for My Celery tasks with common behaviors; extends celery.Task
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Even if you are only extending a single function, you definitely need a class to make this technique function, and extending is defin...