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What’s the difference between ScalaTest and Scala Specs unit test frameworks?
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173
Specs and ScalaTest are both good tools with happy users, but they differ in several ways. You...
Docker how to change repository name or rename image?
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1085
docker image tag server:latest myname/server:latest
or
docker image tag d583c3ac45fd mynam...
How to reverse a string in Go?
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In Go1 rune is a builtin type.
func Reverse(s string) string {
runes := []rune(s)
for i, j := 0, len(runes)-1; i < j; i, j = i+1, j-1 {
runes[i], runes[j] = runes[j], runes[i]
}
return string(runes)
}
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Why are two different concepts both called “heap”?
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Donald Knuth says (The Art of Computer Programming, Third Ed., Vol. 1, p. 435):
Several authors began about 1975 to call the pool of available memory a "heap."
He doesn't say which authors and doesn't give references to any specific papers, but does say that the use of the term "heap" i...
What is the difference between Python's list methods append and extend?
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append: Appends object at the end.
x = [1, 2, 3]
x.append([4, 5])
print (x)
gives you: [1, 2, 3, [4, 5]]
extend: Extends list by appending elements from the iterable.
x = [1, 2, 3]
x.extend([4, 5])
print (x)
gives you: [1, 2, 3, 4, 5]
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Control the dashed border stroke length and distance between strokes
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answered May 5 '10 at 7:20
snowflakesnowflake
1,65622 gold badges1616 silver badges3939 bronze badges
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What does !! mean in ruby?
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161
Not not. It's used to convert a value to a boolean:
!!nil #=> false
!!"abc" #=> true...
Exposing a port on a live Docker container
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15 Answers
15
Active
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What does it mean if a Python object is “subscriptable” or not?
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edited Apr 2 at 14:10
BiAiB
9,22466 gold badges3535 silver badges5454 bronze badges
answered O...