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Allowing expressions to be used inside strings; syntax is $\{...\}

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Stan Angeloff
2010-03-06 02:15:27 +02:00
committed by Jeremy Ashkenas
parent fe7d5dfd19
commit e2f86678a4
3 changed files with 109 additions and 31 deletions
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24
test/test_string_interpolation.coffee
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@@ -1,18 +1,42 @@
hello: 'Hello'
world: 'World'
ok '$hello $world!' is '$hello $world!'
ok '${hello} ${world}!' is '${hello} ${world}!'
ok "$hello $world!" is 'Hello World!'
ok "${hello} ${world}!" is 'Hello World!'
ok "[$hello$world]" is '[HelloWorld]'
ok "[${hello}${world}]" is '[HelloWorld]'
ok "$hello$$world" is 'Hello$World'
# ok "${hello}$${world}" is 'Hello$World'
[s, t, r, i, n, g]: ['s', 't', 'r', 'i', 'n', 'g']
ok "$s$t$r$i$n$g" is 'string'
ok "${s}${t}${r}${i}${n}${g}" is 'string'
ok "\\$s\\$t\\$r\\$i\\$n\\$g" is '$s$t$r$i$n$g'
ok "\\${s}\\${t}\\${r}\\${i}\\${n}\\${g}" is '${s}${t}${r}${i}${n}${g}'
ok "\\$string" is '$string'
ok "\\${string}" is '${string}'
ok "\\$Escaping first" is '$Escaping first'
ok "\\${Escaping} first" is '${Escaping} first'
ok "Escaping \\$in middle" is 'Escaping $in middle'
ok "Escaping \\${in} middle" is 'Escaping ${in} middle'
ok "Escaping \\$last" is 'Escaping $last'
ok "Escaping \\${last}" is 'Escaping ${last}'
ok "$$" is '$$'
ok "${}" is '${}'
ok "\\\\$$" is '\\\\$$'
ok "\\\\${}" is '\\\\${}'
ok "I won $20 last night." is 'I won $20 last night.'
ok "I won $${20} last night." is 'I won $20 last night.'
ok "I won $#20 last night." is 'I won $#20 last night.'
ok "I won $${'#20'} last night." is 'I won $#20 last night.'
ok "${hello + world}" is 'HelloWorld'
ok "${hello + ' ' + world + '!'}" is 'Hello World!'
list: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
ok "values: ${list.join(', ')}, length: ${list.length}." is 'values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, length: 10.'
ok "values: ${list.join ' '}" is 'values: 0 1 2 3 4 5 6 7 8 9'