Glossary Flashcards
(78 cards)
1
Q
# Array.new constructor variable = \_\_\_\_(some_array)
A
Array.new
2
Q
# Array.new constructor variable = \_\_\_\_(some_array)
A
Array.new
3
Q
\_\_\_\_ do |arg| # Do something to each element, referenced as arg end
A
array.each
4
Q
array.each ___ |arg|
# Do something to each element, referenced as arg
end
A
do
5
Q
array.each do \_\_\_\_ # Do something to each element, referenced as arg end
A
|arg|
6
Q
array.each do |arg| # Do something to each element, referenced as arg \_\_\_\_
A
end
7
Q
[[1,2,3], [4,5,6], 7, [[8,9], 10]].____
=> [1,2,3,4,5,6,7,8,9,10]
A
flatten
8
Q
[1,1,1,2,3,4,3,3].___
=> [1,2,3,4]
A
uniq
9
Q
# Blocks that span only one line usually use the braces form
objs.\_\_\_ { |obj| do_something }
A
method
10
Q
# Blocks that span only one line usually use the braces form
objs.method {\_\_\_ do_something }
A
|obj|
11
Q
# Blocks that span only one line usually use the braces form objs.method \_\_ |obj| do_something \_\_
A
{ }
12
Q
objs.method \_\_\_ |obj| # do first line # do second line # ... # do nth line end
A
do
13
Q
objs.method do \_\_\_ # do first line # do second line # ... # do nth line end
A
|obj|
14
Q
objs.method do |obj| # do first line # do second line # ... # do nth line \_\_\_
A
end
15
Q
x __y // returns true if two things are equal
A
==
16
Q
x__y // returns true if two things are not equal
A
!=
17
Q
x __ y // returns true if x is less than or equal to y
A
18
Q
x __ y // returns true if x is greater than or equal to y
A
> =
19
Q
__
comment line
comment line
=end
A
=begin
20
Q
=begin
comment line
comment line
__
A
=end
21
Q
empty_hash = Hash.new
=> {}
my_hash = Hash.new(“The Default”)
my_hash[“random_key”]
=>__
A
“The Default”
22
Q
empty_hash = Hash.new
=> {}
my_hash = Hash.new(“The Default”)
my_hash[“random_key”]
=>__
A
“The Default”
23
Q
\_\_\_\_ do |arg| # Do something to each element, referenced as arg end
A
array.each
24
Q
array.each ___ |arg|
# Do something to each element, referenced as arg
end
A
do
25
```
array.each do ____
# Do something to each element, referenced as arg
end
```
|arg|
26
```
array.each do |arg|
# Do something to each element, referenced as arg
____
```
end
27
[[1,2,3], [4,5,6], 7, [[8,9], 10]].____
| => [1,2,3,4,5,6,7,8,9,10]
flatten
28
[1,1,1,2,3,4,3,3].___
| => [1,2,3,4]
uniq
29
```
# Blocks that span only one line usually use the braces form
objs.___ { |obj| do_something }
```
method
30
```
# Blocks that span only one line usually use the braces form
objs.method {___ do_something }
```
|obj|
31
```
# Blocks that span only one line usually use the braces form
objs.method __ |obj| do_something __
```
{ }
32
```
objs.method ___ |obj|
# do first line
# do second line
# ...
# do nth line
end
```
do
33
```
objs.method do ___
# do first line
# do second line
# ...
# do nth line
end
```
|obj|
34
```
objs.method do |obj|
# do first line
# do second line
# ...
# do nth line
___
```
end
35
x __y // returns true if two things are equal
==
36
x__y // returns true if two things are not equal
!=
37
x __ y // returns true if x is less than or equal to y
38
x __ y // returns true if x is greater than or equal to y
>=
39
__
comment line
comment line
=end
=begin
40
=begin
comment line
comment line
__
=end
41
```
# Hash.new constructor
my_hash = ___([default_value])
```
Hash.new
42
empty_hash = Hash.new
=> {}
my_hash = Hash.new("The Default")
my_hash["random_key"]
=>__
"The Default"
43
```
# Hash literal notation
my_hash = {
__ => value1,
:key2 => value2,
3 => value 3
}
```
"key1"
44
```
# Hash literal notation
my_hash = {
"key1" => value1,
:key2 => value2,
3 => value 3
}
```
:key2
45
```
# Hash literal notation
my_hash = {
"key1" => value1,
:key2 => value2,
__ => value 3
}
```
3
46
my_hash = {
__
}
key1: value1,
key2: value2
47
if ___
puts "I get printed!"
end
I get printed!
true
48
___ false
puts "I get printed!"
end
I get printed!
unless
49
```
x = 5
if x > 5
print "I am big!"
___ x == 5
print "I am medium!"
else
print "I am small!"
end
```
I am medium!
elsif
50
```
x = 5
if x > 5
print "I am big!"
elsif x == 5
print "I am medium!"
___
print "I am small!"
end
```
I am medium!
else
51
i = 1
| ___ i
while
52
counter = 3
| ___ counter
until
53
__ number in (0..5)
puts number
end
```
0
1
2
3
4
5
```
for
54
for number __ (0..5)
puts number
end
```
0
1
2
3
4
5
```
in
55
my_array = ["Matz", "chunky", "bacon"]
for item in __
puts item
end
Matz
chunky
bacon
my_array
56
10 __ 3
| => 1
%
57
9.99.___
| => 9
floor
58
45.4.___
=> 46
(4 - 1.9).___
=> 3
ceil
59
__
| => 3.14159265358979
Math::PI
60
___(100)
=> 10.0
___(5+4)
=> 3.0
Math.sqrt
61
___ sum(x,y)
x + y
end
sum(13, 379)
=> 392
def
62
3.times { ___ "Hello!" }
| Hello!Hello!Hello!
print
63
3.times { ___ "Hello!" }
Hello!
Hello!
Hello!
puts
64
```
a = ["4"]
___ a
when 1..4, 5
puts "It's between 1 and 5"
when 6
puts "It's 6"
when String
puts "You passed a string"
else
puts "You gave me #{a} -- I have no idea what to do with that."
end
```
=> You gave me 4 -- I have no idea what to do with that.
case
65
```
a = ["4"]
case a
___ 1..4, 5
puts "It's between 1 and 5"
___ 6
puts "It's 6"
___ String
puts "You passed a string"
else
puts "You gave me #{a} -- I have no idea what to do with that."
end
```
=> You gave me 4 -- I have no idea what to do with that.
when
66
```
a = ["4"]
case a
when 1..4, 5
puts "It's between 1 and 5"
when 6
puts "It's 6"
when String
puts "You passed a string"
___
puts "You gave me #{a} -- I have no idea what to do with that."
end
```
=> You gave me 4 -- I have no idea what to do with that.
else
67
grade = 88
status = grade >= 70 ___ "pass" : "fail"
=> pass
?
68
grade = 88
status = grade >= 70 ? "pass"___ "fail"
=> pass
:
69
ne_to_ten = (1..10).to_a
one_to_ten.___ do |num|
print (num**2).to_s + " "
end
1 4 9 16 25 36 49 64 81 100
each
70
ne_to_ten = (1..10).to_a
one_to_ten.each ___ |num|
print (num**2).to_s + " "
end
1 4 9 16 25 36 49 64 81 100
do
71
3.____ do
puts "I'm in the loop!"
end
puts "I'm out the loop!"
times
72
3.times ____
puts "I'm in the loop!"
end
puts "I'm out the loop!"
do
73
空のハッシュを作成
| scores = ____
{}
74
```
# キー"Alice"、値80のペアを追加
scores____ = 80
```
["Alice"]
75
```
# キー"Alice"、値80のペアを追加
scores["Alice"] ___
```
= 80
76
```
# キー"Alice"の値を取り出し
p scores____
```
["Alice"]
77
```
# 3つのキー(name, email, address)＋値からなるハッシュを作成
user = { ___ => "k-sato", ___ => "k-sato@foo.xx.jp",
___ => "Tokyo" }
```
:name :email :address
78
```
# キー:nameの値を取り出し
p user___
```
[:name]
