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Why is NaN not equal to NaN? [duplicate]
...c then you could get wildly incorrect (or worse: subtly incorrect) results from your calculations with no obvious indicator as to why.
There are also really good reasons for NaNs in calculations when probing the value of a mathematical function; one of the examples given in the linked document is ...
How to count the number of occurrences of an element in a List
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Always prefer Api from JRE, that add another dependency to the project. And don't Reinventing the wheel !!
– Fernando.
Jun 4 '18 at 8:07
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Why would I use a templating engine? jsp include and jstl vs tiles, freemarker, velocity, sitemesh
...s far simpler than JSP EL or tag libraries
Strict separation of view logic from any other sort of logic - no possible option to drop down to using scriptlet tags and doing nasty things in your templates.
Placeholders - do velocity/freemaker give anything more than JSTL? In JSTL you put placeho...
How Does Modulus Divison Work
... You left out very important steps that explain where that remainder comes from. Marcin M.'s answer below explained the process better. Please consider being more detailed in future answers for those of us that may not have a grasp on a concept at all. Thank you for being a contributing member to...
How to create enum like type in TypeScript?
... The enum and its member naming conventions is the same as in c#. (both from Microsoft). It's PascalCase. Not UPPER_CASE.
– Dominik
Nov 13 '19 at 14:41
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Subtract 7 days from current date
It seems that I can't subtract 7 days from the current date. This is how i am doing it:
11 Answers
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open read and close a file in 1 line of code
...p", "copyright", "credits" or "license" for more information.
>>> from pathlib import Path
>>> (Path("/etc") / "hostname").read_text()
'dev1.example\n'
On Python 27 install backported pathlib or pathlib2
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sh: 0: getcwd() failed: No such file or directory on cited drive
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This error is usually caused by running a command from a directory that no longer exist.
Try changing your directory and re-run the command.
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How to generate random number in Bash?
...are not random. If you specify shuf -i 1-10 -n 10 you will get all numbers from 1 to 10 exactl one. If you specify -n 15 you will still get only those 10 numbers exactly once. That is really only shuffling, not generating random numbers.
– radlan
Apr 27 at 13:0...
Does Java casting introduce overhead? Why?
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There are 2 types of casting:
Implicit casting, when you cast from a type to a wider type, which is done automatically and there is no overhead:
String s = "Cast";
Object o = s; // implicit casting
Explicit casting, when you go from a wider type to a more narrow one. For this case, y...