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What is the difference between ~> and >= when specifying rubygem in Gemfile?
...t, and how to upload it so that others can install it.
How to create a Gem from scratch with Bundler
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What is the definition of “interface” in object oriented programming
...en in C++ you can meet "interfaces" in a way of objects that are decoupled from the implementation.
– Victoria
Jul 3 '17 at 18:46
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Object initialization syntax
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the answer from CMS is definitely correct. Here is just one addition that may be also helpful. In F#, you often want to write the type just using immutable properties. When using the "object initializer" syntax, the properties have to b...
JQuery .on() method with multiple event handlers to one selector
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I learned something really useful and fundamental from here.
chaining functions is very usefull in this case which works on most jQuery Functions including on function output too.
It works because output of most jQuery functions are the input objects sets so you can use th...
Transpose a data frame
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You can use the transpose function from the data.table library. Simple and fast solution that keeps numeric values as numeric.
library(data.table)
# get data
data("mtcars")
# transpose
t_mtcars <- transpose(mtcars)
# get row and colnames in order
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Telling gcc directly to link a library statically
... GNU is nowhere responsible for this interface, it was inherited from the Unix toolchain.
– akim
Dec 4 '17 at 9:02
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disable the swipe gesture that opens the navigation drawer in android
...libraries and LOCK_MODE_LOCKED_CLOSED now completely prevents the nav menu from showing, even via using the hamburger menu.
The following class works for me (Kotlin):
class MyDrawerLayout(ctx: Context) : DrawerLayout(ctx) {
var isSwipeOpenEnabled: Boolean = true
override fun onInterceptTouchE...
What is the purpose and use of **kwargs?
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I would imagine the keyword terminology comes from the fact you are passing in a dict which is a database of key-value pairs.
– crobar
May 11 '17 at 9:38
How to pip install a package with min and max version range?
...ements.txt IMO. Using package==1.* instead of package>=1.2 prevents pip from installing major version 2+ for the package, which is desirable since major version changes are often backwards incompatible.
– Michael Hays
Jan 18 '18 at 18:41
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Disable copy constructor
... = delete;
NonAssignable() {}
};
The delete keyword prevents members from being default-constructed, so they cannot be used further in a derived class's default-constructed members. Trying to assign gives the following error in GCC:
test.cpp: error: use of deleted function
‘Symbol...