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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...
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...
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.
...
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...
Java: random long number in 0
Random class has a method to generate random int in a given range. For example:
16 Answers
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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"); } }...
What is the difference between ? and Object in Java generics?
I'm using Eclipse to help me clean up some code to use Java generics properly. Most of the time it's doing an excellent job of inferring types, but there are some cases where the inferred type has to be as generic as possible: Object. But Eclipse seems to be giving me an option to choose between a...
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
...