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Why no ICloneable?
... with cloning comes with a variation of the "diamond problem": if CloneableFoo inherits from [not publicly cloneable] Foo, should CloneableDerivedFoo derive from...
– supercat
Aug 10 '12 at 15:26
...
How do Mockito matchers work?
... generally used in assertions such as the one below.
/* Mockito */ verify(foo).setPowerLevel(gt(9000));
/* Hamcrest */ assertThat(foo.getPowerLevel(), is(greaterThan(9000)));
Mockito matchers exist, separate from Hamcrest-style matchers, so that descriptions of matching expressions fit directly in...
Use of “global” keyword in Python
... you want to modify them you have to use the global keyword. For example:
foo = 1
def test():
foo = 2 # new local foo
def blub():
global foo
foo = 3 # changes the value of the global foo
In your case, you're just accessing the list sub.
...
Why should we typedef a struct so often in C?
...position of ordering relationships among header files.
Consider:
#ifndef FOO_H
#define FOO_H 1
#define FOO_DEF (0xDEADBABE)
struct bar; /* forward declaration, defined in bar.h*/
struct foo {
struct bar *bar;
};
#endif
With such a definition, not using typedefs, it is possible for a compil...
How to display pandas DataFrame of floats using a format string for columns?
...aFrame([123.4567, 234.5678, 345.6789, 456.7890],
index=['foo','bar','baz','quux'],
columns=['cost'])
print(df)
yields
cost
foo $123.46
bar $234.57
baz $345.68
quux $456.79
but this only works if you want every float to be formatted with a dollar si...
Is it possible to “await yield return DoSomethingAsync()”
...it has to wait for that operation to finish.
async Task<IEnumerable<Foo>> Method(String [] Strs)
{
foreach(var str in strs)
{
yield return await DoSomethingAsync( str)
}
}
The awaiting Method mixes meanings. Do you want to wait until the Task has an IEnumerable and then bl...
Why does calling a method in my derived class call the base class method?
...e two keywords in a long inheritance chain. Consider the following:
class Foo { public virtual void DoFoo() { Console.WriteLine("Foo"); } }
class Bar:Foo { public override sealed void DoFoo() { Console.WriteLine("Bar"); } }
class Baz:Bar { public virtual void DoFoo() { Console.WriteLine("Baz"); } }...
Best way to require all files from a directory in ruby?
... .rb extension is optional. Technically it changes the meaning: "require 'foo.rb'" requires foo.rb, whereas "require 'foo'" might require foo.rb, foo.so or foo.dll.
– Sam Stokes
Apr 9 '09 at 17:46
...
What's the cleanest way of applying map() to a dictionary in Swift?
... problem.
#1. Using Dictionary mapValues(_:) method
let dictionary = ["foo": 1, "bar": 2, "baz": 5]
let newDictionary = dictionary.mapValues { value in
return value + 1
}
//let newDictionary = dictionary.mapValues { $0 + 1 } // also works
print(newDictionary) // prints: ["baz": 6, "foo": 2...
Sorting an IList in C#
...
You can use LINQ:
using System.Linq;
IList<Foo> list = new List<Foo>();
IEnumerable<Foo> sortedEnum = list.OrderBy(f=>f.Bar);
IList<Foo> sortedList = sortedEnum.ToList();
...