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Is C++14 adding new keywords to C++?
The C++ Standards Committee tends to shy away from adding new keywords to the language, yet with C++11 that was not the case. Some examples:
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Declaring variables inside or outside of a loop
...lity.
Performance doesn't matter for today's compilers.(in this scenario)
From a maintenance perspective, 2nd option is better.
Declare and initialize variables in the same place, in the narrowest scope possible.
As Donald Ervin Knuth told:
"We should forget about small efficiencies, say about...
Why don't Java Generics support primitive types?
...esent any
user defined object.
Since all primitives doesn't inherit from "Object" so we can't use it
as a generic type.
FYI : Project Valhalla is trying to address above issue.
share
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im...
Is it possible to have a multi-line comments in R? [duplicate]
I found this old thread (from over a year ago), which explains how come R doesn't support a multi-line comments (like /* comment */ of PHP, for example).
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Golang production web application configuration
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I have a small shell script on the server that pulls code for my project from a remote Git repository, builds it with Go, copies the binaries and other assets to ~/myapp/, and restarts the service.
Overall, the whole thing is not very different from any other server setup: you have to have a way ...
What does it mean for a data structure to be “intrusive”?
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An intrusive data structure is one that requires help from the elements it intends to store in order to store them.
Let me reword that. When you put something into that data structure, that "something" becomes aware of the fact that it is in that data structure, in some way. Ad...
Rails has_and_belongs_to_many migration
...ils 5
rails g migration CreateJoinTableRestaurantUser restaurants users
From the docs:
There is also a generator which will produce join tables if JoinTable
is part of the name:
Your migration file (note the :id => false; it's what prevents the creation of a primary key):
Rails 3
c...
Convert floating point number to a certain precision, and then copy to string
...r more information on option two, I suggest this link on string formatting from the Python documentation.
And for more information on option one, this link will suffice and has info on the various flags.
Python 3.6 (officially released in December of 2016), added the f string literal, see more inf...
Java 8 forEach with index [duplicate]
... if the specific order is not something that can be mathematically derived from the result of IntStream.range(0, params.size()), like Stream.iterate(new int[] {0, 1}, ia -> new int[] {ia[1], ia[0] + ia[1]}).mapToInt(ia -> ia[0]).filter(i -> i < params.size()).limit(params.size()) if you ...
How do I list the functions defined in my shell?
... supply filenames/line#s even when extdebug is enabled, which is not clear from the documentation, nor is it particularly intuitive, IMO.
– Ron Burk
May 16 '17 at 8:35
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