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What is ECMAScript?
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Why is a combiner needed for reduce method that converts type in java 8
... provide foldLeft and foldRight operations because they imply a particular ordering of operations that is inherently sequential. This clashes with the design principle stated above of providing APIs that support sequential and parallel operation equally.
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How to iterate over rows in a DataFrame in Pandas
...Do you want to compute something? In that case, search for methods in this order (list modified from here):
Vectorization
Cython routines
List Comprehensions (vanilla for loop)
DataFrame.apply(): i) Reductions that can be performed in Cython, ii) Iteration in Python space
DataFrame.itertuples() a...
Why XML-Serializable class need a parameterless constructor
...n, the XmlSerializer class will need to create
instances of your type.
In order to create an instance of a type, a constructor of that type
needs to be invoked.
If you did not declare a constructor, the compiler has already
supplied a default parameterless constructor, but if you did declare
a con...
“Notice: Undefined variable”, “Notice: Undefined index”, and “Notice: Undefined offset” using PHP
...hough PHP does not require a variable declaration, it does recommend it in order to avoid some security vulnerabilities or bugs where one would forget to give a value to a variable that will be used later in the script. What PHP does in the case of undeclared variables is issue a very low level erro...
Create Git branch with current changes
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How much of a git sha is *generally* considered necessary to uniquely identify a change in a given c
...s is still unique for a lot of them, but when we're talking about just two orders of magnitude difference between number of objects and the hash size, there will be collisions in truncated hash values.
It's no longer even close to unrealistic - it happens all the time.
We should both increase...
Importing from builtin library when module with same name exists
...t relies on python treating paths in one way or looking up modules in that order may break sooner or later.
– Boaz Yaniv
May 17 '11 at 14:38
1
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Understanding the Event Loop
...ibrary. Even if you are using an npm package that defines it's own API, in order to yield the event loop, eventually that npm package's code will call one of node core's async functions and that's when node knows the tick is complete and it can start the event loop algorithm again.
4 The Event L...
Selecting and manipulating CSS pseudo-elements such as ::before and ::after using jQuery
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We can also rely on custom properties (aka CSS variables) in order to manipulate pseudo-element. We can read in the specification that:
Custom properties are ordinary properties, so they can be declared on
any element, are resolved with the normal inheritance and cascade
rules,...