The one-time cost of sorting the list might be worthwhile. If you only really care whether the value is present or not, you can load the list entries into a dictionary or array as keys; checking for presence of a value then (dict exists or info exists) is a very cheap operation, eve...
57、o=,=?,andoareallsynonymous.Anequivalenceclassmaynotbeanendpointofarange.(Note:TclcurrentlyimplementsonlytheUnicodelocale.Itdoesntdefineanyequivalenceclasses.Theexamplesabovearejustillustrations.)Withinabracketexpression,thenameofacharacterclassenclosedin:and:standsforthelistofallcharacters(notallcol 58、lating...
tanh( x) Hyperbolic tangent of x. TCL中有很多命令都以表达式作为参数。最典型的是expr命令,另外if、while、for等循环控制命令的循环控制中也都使用表达式作为参数。 四 list 1 List命令 list这个概念在TCL中是用来表示集合的。TCL中list是由一堆元素组成的有序集合,list可以嵌套定义,list每个元素可以是任意字符...
# data is plain old tcl values # spec is defined as follows: # {string} - data is simply a string, "quote" it if it's not a number # {list} - data is a tcl list of strings, convert to JSON arrays # {list list} - data is a tcl list of lists # {list dict} - data is...
Lists就好像是Tcl中的一种特殊的数组。它把一堆东西放成一个集合，然后就像操作一个整体一样的操作它。Example 6.1:set simple_list John Joe Mary Susanputs [lindex $simple_list 0]puts [lindex $simple_list 2]Output:JohnMary注意list的index是从0开始的Example 6.2:set simple_list2 Mike ...
是指在TCL编程语言中使用字符串的一种方式。在TCL中,字符串可以通过单引号或双引号来定义,例如: 代码语言:txt 复制 set str1 'Hello World' set str2 "Hello World" 常规字符串引用的优势在于它可以直接使用简单的引号来定义字符串,不需要使用特殊的语法或转义字符。这使得代码更易读和编写。 常规字符串引用在...
Tcl lists are just strings with a special interpretation. Separated by white space or grouped with braces or quotes. tcl> set mylist "a b {c d}" tcl> set mylist [lista b {c d}] ;# same as above tcl>for eachelement $mylist {puts $element} ...
"""Encodes a list of strings to a single string. :type strs: List[str] :rtype: str """ res = '' for string in strs.split(): res += str(len(string)) + ":" + string return res def decode(s): """Decodes a single string to a list of strings. ...
-real 把list的元素转换成浮点数,按浮点数排序. -increasing 升序(按ASCII字符比较) -decreasing 降序(按ASCII字符比较) -command command TCL自动利用command 命令把每两个元素一一比较,然后给出排序结果。 split命令语法:split string ?splitChars? 把字符串string按分隔符splitChars分成一个个单词,返回由这些单词...
Once defined, a Tcl procedure is used just like any of the other built-in Tcl commands. The basic syntax to define a procedure is: proc name arglist body The first argument is the name of the procedure being defined. The second argument is a list of parameters to the procedure. The ...