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For loops
For loops are very useful in ns and can be used in conjunction with arrays to easily create larger network topologies. To generate 100 nodes, the following code can be used:
for {set i 0}{$i < 100}{incr i} {
set n($i) [$ns node]
}
While loops
These are very similar to for loops. The syntax is
set i 0
while {$i < 10} {
set n($i) [new Node]
incr i
}
If statements
If statements are very simple
if {$i < 10} {
puts "i is less than 10"
}
if {$var2 == "Tcl Variable 2"} {
puts "var2 = Tcl Variable 2"
}
+ comments + 2 comments
Appreciate this post. Will try it out.
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In the first example of the for loop, there needs two be spaces. It doesn't compile as
for {set i 0}{$i < 100}{incr i} {
set n($i) [$ns node]
}
but it will compile as
for {set i 0} {$i < 100} {incr i} {
set n($i) [$ns node]
}
this includes the added two spaces on line 1 between the braces of the for conditions
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