Not sure , but it seems , my understanding capabilities are poor
Ok ,
This is the input :
and the output you want is , how many no of times the lines with the "dddd" are occurred in the input ( in the first field) ?. is it right?
hello,
friends
i would like to know what is the differnce between static library and dynamic library?
How will u create them and what are there uses? (1 Reply)
Hi,
I have a SUN SPARC with 2 NICs running Solaris 9. I want to configure the first NIC using static IP and the second NIC using dynamic IP (DHCP client).
Anyone help me!
Thanks in advanced.
Tinh (2 Replies)
I declared a variable x that gets the count(*) from a table. The table name is also defined as a variable.
What's wrong with this statment :
X=” select count(*) from ${table_name}“
then
y = `${X}${table_name}'
echo ${y}
It throws an error saying count not found.
Please... (1 Reply)
I had just install a solaris 10 server. I set the ip address to static during installation. I want to change it to dynamic but I don't know how. Expert here please help me! (5 Replies)
I need to deploy a JAVA application on two separate servers:
1. Web server (IBM HTTP Web Servers (IHS))
2. Application Server (WebSphere Application Server WAS7.0)
The static content will have to be deployed and handled on Web server. These would include GIFs, HTML, CSS, etc files.... (0 Replies)
Dear Unix experts
Moved from "Shell Programming and Scripting "
I want to define a variable which contains dynmic and static part, daynamic part is the first field.
Sample of data
dddd aaaa sssss 12345
ssss 2323 234234 4242
dddd 3223 34234 54353
ssss 24234 3434 42342
dddd rwrw 423423... (2 Replies)
if I could compile the same source file as shared/static/dynamic what are the advantages/ disadv of each.
PS:by dynamic i am asking about usage of "dlopen". How is it particularly diff from shared libs (2 Replies)
how to check
1. If variable is declared or not
2. If any value if assigned to variable or not.
in UNIX shell script (6 Replies)
Discussion started by: ace_friends22
6 Replies
LEARN ABOUT OSX
apply
apply(n) Tcl Built-In Commands apply(n)
__________________________________________________________________________________________________________________________________________________NAME
apply - Apply an anonymous function
SYNOPSIS
apply func ?arg1 arg2 ...?
_________________________________________________________________DESCRIPTION
The command apply applies the function func to the arguments arg1 arg2 ... and returns the result.
The function func is a two element list {args body} or a three element list {args body namespace} (as if the list command had been used).
The first element args specifies the formal arguments to func. The specification of the formal arguments args is shared with the proc com-
mand, and is described in detail in the corresponding manual page.
The contents of body are executed by the Tcl interpreter after the local variables corresponding to the formal arguments are given the val-
ues of the actual parameters arg1 arg2 .... When body is being executed, variable names normally refer to local variables, which are cre-
ated automatically when referenced and deleted when apply returns. One local variable is automatically created for each of the function's
arguments. Global variables can only be accessed by invoking the global command or the upvar command. Namespace variables can only be
accessed by invoking the variable command or the upvar command.
The invocation of apply adds a call frame to Tcl's evaluation stack (the stack of frames accessed via uplevel). The execution of body pro-
ceeds in this call frame, in the namespace given by namespace or in the global namespace if none was specified. If given, namespace is
interpreted relative to the global namespace even if its name does not start with "::".
The semantics of apply can also be described by:
proc apply {fun args} {
set len [llength $fun]
if {($len < 2) || ($len > 3)} {
error "can't interpret "$fun" as anonymous function"
}
lassign $fun argList body ns
set name ::$ns::[getGloballyUniqueName]
set body0 {
rename [lindex [info level 0] 0] {}
}
proc $name $argList ${body0}$body
set code [catch {uplevel 1 $name $args} res opt]
return -options $opt $res
}
EXAMPLES
This shows how to make a simple general command that applies a transformation to each element of a list.
proc map {lambda list} {
set result {}
foreach item $list {
lappend result [apply $lambda $item]
}
return $result
}
map {x {return [string length $x]:$x}} {a bb ccc dddd}
-> 1:a 2:bb 3:ccc 4:dddd
map {x {expr {$x**2 + 3*$x - 2}}} {-4 -3 -2 -1 0 1 2 3 4}
-> 2 -2 -4 -4 -2 2 8 16 26
The apply command is also useful for defining callbacks for use in the trace command:
set vbl "123abc"
trace add variable vbl write {apply {{v1 v2 op} {
upvar 1 $v1 v
puts "updated variable to "$v""
}}}
set vbl 123
set vbl abc
SEE ALSO
proc(n), uplevel(n)
KEYWORDS
argument, procedure, anonymous function
Tcl apply(n)