3
請考慮這個例子,我將map!
保存到一個文件中,並且想要加載它並訪問它的密鑰和值。其鍵是散列(INTEGER!通過checksum
計算)和它的值是塊:加載散列 - 對象密鑰對的映射
Rebol []
bl1: make object! [
name: "first"
age: 42
]
bl2: make bl1 []
bl2/name: "second"
bl2/age: 30
hash1: checksum to-binary to-string bl1
hash2: checksum to-binary to-string bl2
m1: make map! []
repend m1 [hash1 bl1]
repend m1 [hash2 bl2]
save %./map_example.ls m1
m2: do load %./map_example.ls
probe join "m2: " type? m2
它返回"m2: map!"
文件%map_example.ls組成:
make map! [
2749161 make object! [
name: "first"
age: 42
]
4111405 make object! [
name: "second"
age: 30
]
]
我如何才能讀取map!
以訪問其對象的鍵和值?
是foreach
要走的路嗎?