1 #### bool() conversion
2 echo "$[bool(1234)]"
3 echo "$[bool(0)]"
4 echo "$[bool('foo')]"
5 echo "$[bool(true)]"
6 echo "$[bool(1.234)]"
7 echo "$[bool([])]"
8 echo "$[bool({})]"
9 echo "$[bool(null)]"
10 echo "$[bool(len)]"
11 echo "$[bool('foo'=>startsWith)]"
12 echo "$[bool(1..3)]"
13 ## STDOUT:
14 true
15 false
16 true
17 true
18 true
19 false
20 false
21 false
22 true
23 true
24 true
25 ## END
26
27 #### bool() more
28 var a = bool( :|| )
29 var b = bool( :|foo| )
30 write $a $b
31 ## STDOUT:
32 false
33 true
34 ## END
35
36
37 #### int() conversion
38 echo "$[int(1234)]"
39 echo "$[int('1234')]"
40 echo "$[int(1.234)]"
41 ## STDOUT:
42 1234
43 1234
44 1
45 ## END
46
47 #### int() more
48 pp test_ (int("3"))
49 pp test_ (int("-35"))
50 pp test_ (int('5_6'))
51
52 shopt -s ysh:upgrade
53
54 try {
55 var c = int("bad")
56 }
57 echo code=$[_error.code]
58
59 ## STDOUT:
60 (Int) 3
61 (Int) -35
62 (Int) 56
63 code=3
64 ## END
65
66 #### float() conversion
67 echo "$[float(1234)]"
68 echo "$[float('1.234')]"
69 echo "$[float(2.345)]"
70 ## STDOUT:
71 1234.0
72 1.234
73 2.345
74 ## END
75
76 #### float() overflow / underflow
77
78 var a = float("1.2")
79 var b = float("3.4")
80
81 var c = float("42.1e500")
82 var d = float("-42.1e500")
83
84 write $a $b $c $d
85 ## STDOUT:
86 1.2
87 3.4
88 inf
89 -inf
90 ## END
91
92 #### str() conversion
93 echo "$[str(1234)]"
94 echo "$[str(1.234)]"
95 echo "$[str('foo')]"
96 ## STDOUT:
97 1234
98 1.234
99 foo
100 ## END
101
102 #### dict() converts from BashAssoc to Dict
103 declare -A foo
104 foo=([a]=1 [b]=2 [c]=3)
105
106 json write (type(foo))
107 json write (dict(foo))
108 ## STDOUT:
109 "BashAssoc"
110 {
111 "a": "1",
112 "b": "2",
113 "c": "3"
114 }
115 ## END
116
117 #### dict() does shallow copy
118 var d = {'a': 1}
119 var d2 = d
120 setvar d2['b'] = 2
121 echo $['b' in d] # d2 should be an alias for d
122
123 var d3 = dict(d)
124 setvar d3['c'] = 3
125
126 # d3 should NOT be an alias
127 echo $['c' in d]
128 echo $['c' in d3]
129 ## STDOUT:
130 true
131 false
132 true
133 ## END
134
135 #### list() does shallow copy
136 var l = [1]
137 var l2 = l
138 call l2->append(2)
139 echo $[len(l)] # d2 should be an alias for d
140
141 var l3 = list(l)
142 call l3->append(3)
143
144 # l3 should NOT be an alias
145 echo $[len(l)]
146 echo $[len(l3)]
147 ## STDOUT:
148 2
149 2
150 3
151 ## END
152
153 #### list() from Dict
154 shopt -s ysh:upgrade
155
156 var a = list({'a': 1, 'foo': 'bar'})
157 write @a
158 ## STDOUT:
159 a
160 foo
161 ## END
162
163
164 #### list() from range
165 shopt -s ysh:upgrade
166
167 var mylist = list(0..3)
168 write @mylist
169 ## STDOUT:
170 0
171 1
172 2
173 ## END
174