array命令

array ----操作数组变量

语法:
array option arrayName ?arg arg ...?

该命令对于arrayName进行一系列操作。除非下文指定单独命令，arrayName必须为一个存在的数组变量。选项决定命令执行的方式。合法的选项为:

array anymore arrayName searchId
  如果在查找中仍然存在更多的元素，则返回1
 
array donesearch arrayName searchId
  根据searchId来决定终止数组查找并销毁所有状态

array exists arrayName
  如果arrayName存在则返回1，否则为0

array get arrayName ?pattern?
  返回arrayName的索引和值

array names arrayName ?mode? ?pattern?
  返回在arrayName中和pattern匹配的一系列的数组名字。mode为-exact，-glob，-regexp

array nextelement arrayName searchId
  返回arrayName的下一个元素的名字，或者当arrayName中的所有元素已经在查找中返回空字符串。

array set arrayName list
  初始化list 为名为arrayName的数组

array size arrayName
  返回arrayName的元素数值

array startsearch arrayName
  由arrayName按元素顺序进行查找并返回令牌

array statistics arrayName
  返回表示arrayName的hash表的分布数据

array unset arrayName ?pattern?
  销毁数组arrayName
 
array set colorcount {
    red   1
    green 5
    blue  4
    white 9
}

foreach {color count} [array get colorcount] {
   puts "Color: $color Count: $count"
}
 => Color: blue Count: 4
    Color: white Count: 9
    Color: green Count: 5
    Color: red Count: 1

foreach color [array names colorcount] {
   puts "Color: $color Count: $colorcount($color)"
}
 => Color: blue Count: 4
    Color: white Count: 9
    Color: green Count: 5
    Color: red Count: 1

foreach color [lsort [array names colorcount]] {
    puts "Color: $color Count: $colorcount($color)"
}
 => Color: blue Count: 4
    Color: green Count: 5
    Color: red Count: 1
    Color: white Count: 9

array statistics colorcount
 => 4 entries in table, 4 buckets
    number of buckets with 0 entries: 1
    number of buckets with 1 entries: 2
    number of buckets with 2 entries: 1
    number of buckets with 3 entries: 0
    number of buckets with 4 entries: 0
    number of buckets with 5 entries: 0
    number of buckets with 6 entries: 0
    number of buckets with 7 entries: 0
    number of buckets with 8 entries: 0
    number of buckets with 9 entries: 0
    number of buckets with 10 or more entries: 0
    average search distance for entry: 1.2