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How can I create an object and add attributes to it?
...nctions). So, the following works:
obj = someobject
obj.a = lambda: None
setattr(obj.a, 'somefield', 'somevalue')
Whether the loss of clarity compared to the venerable Bunch recipe is OK, is a style decision I will of course leave up to you.
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What does this symbol mean in JavaScript?
...w));
someFunction()() — Functions which return other functions
Two sets of parentheses after function call
=> — Equal sign, greater than: arrow function expression syntax
What's the meaning of "=>" (an arrow formed from equals & greater than) in JavaScript?
|> — P...
Haskell Type vs Data Constructor
...of data. You can also sometimes make an "enumeration", which has a (small) set of fixed possible values (e.g., your Red, Green and Blue).
In Haskell, you can combine both of these at the same time. Weird, but true!
Why is it called "algebraic"? Well, the nerds talk about "sum types" and "product t...
When should I use a struct rather than a class in C#?
...mantic imperfections, but because the type semantically represents a fixed set of independent values, and so the mutable struct is both more performant and semantically superior.
– supercat
Mar 6 '13 at 18:18
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Android: Remove all the previous activities from the back stack
... me:
Java
Intent i = new Intent(OldActivity.this, NewActivity.class);
// set the new task and clear flags
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(i);
Kotlin
val i = Intent(this, NewActivity::class.java)
// set the new task and clear flags
i.fla...
How to prevent ifelse() from turning Date objects into numeric objects
...t to retain is a factor
# Typecast the return object as.factor()
# Set its levels()
# Then check to see if it's also one or more classes in addition to "factor"
# If so, set the classes, which will preserve "factor" too
if (preserved_is_factor) {
return_obj <-...
Unable to load DLL (Module could not be found HRESULT: 0x8007007E)
...d the dll to my project (NOT in References, but "Add existing file"). Then set the "Copy to Output Directory" Property for the dll to "Copy if newer".
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Where does Vagrant download its .box files to?
...
To change the Path, you can set a new Path to an Enviroment-Variable named:
VAGRANT_HOME
export VAGRANT_HOME=my/new/path/goes/here/
Thats maybe nice if you want to have those vagrant-Images on another HDD.
More Information here in the Documentation...
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...e).
Another example:
[...]
auto precision = std::cout.precision();
auto set_precision_back = finally( [precision, &std::cout]() { std::cout << std::setprecision(precision); } );
std::cout << std::setprecision(3);
The disable member is useful if the finally has to be called only ...
System.BadImageFormatException: Could not load file or assembly [duplicate]
...
or change in Visual Studio(compiler settings) the target from “X86 ” to “Any CPU”.
– Tim Schmelter
Oct 25 '12 at 15:07
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