Use PATH_MAX if it exists 2个月前 jimregexp.c regexp: fix incorrect check for invalid escape sequence at end of charset 2年前 jimregexp.h jimregexp: rename local regex functions 5年前 jimsh.c build: win32: STDIN_FILENO may not be defined on Windows ...
if { [info exists ::origin_dir_loc]} { set origin_dir $::origin_dir_loc } set _xil_prj_name_ "prj" if { [info exits ::user_project_name]} { set _xil_prj_name_ $::user_project_name } variable script_file set script_file "prj.tcl" proc print_help {} { variable script_fi...
Scope: Be mindful of variable scope when unsetting. Arrays: Unset entire arrays to free all elements. Safety: Use -nocomplain for optional cleanup. Testing: Check with info exists before accessing.This tutorial covered the Tcl unset command with practical examples showing its usage in different sc...
Vivado%puts"The PATH variable is$env(PATH) " To get the list of all the Unix environment variables: Vivado%:setall_env_var [array namesenv] It is possible to check if an environment variable exists (i.e a key toenvarray exists) by using theinfocommand. For example to check forMYVAR...
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Example 1–17 Using info to determine if a variable exists. if {![info exists foobar]} { set foobar 0 } else { incr foobar } Example 7–6 on page 86 implements a new version of incr which handles this case. More about Math Expressions This section describes a few fine points about ...
proc lprepend {varName args} { upvar 1 $varName var # Ensure that the variable exists and contains a list lappend var # Now we insert all the arguments in one go set var [eval [list linsert $var 0] $args]} 最后一行可以写成: ...
为了查找一个变量是否存在,可以使用tcl的info exists命令,例如说,为了查看变量total_cells是否存在,键入: dc_shell> info exists total_cells 如果变量存在,则info exists返回1,否则,返回0。 为了查看变量是否与特定的类型相匹配,使用Tcl的脚本info vars命令,例如 ...
[COLOR=#0000ff]# check if variable exists then print it[/color] [COLOR=#804040][b]set[/b][/color] var_name {COMPUTERNAME} [COLOR=#804040][b]if[/b][/color] {[[COLOR=#804040][b]info[/b][/color] exists env([COLOR=#008080]$var_name[/color])]} { [COLOR=#804040][b]set...
The array exists command checks if a variable is an array. array_exists.tcl array set user { name John age 30 city New York } if {[array exists user]} { puts "User array exists" } else { puts "User array does not exist" } ...