When reading over some perl code in a software document, I came across an assignment statement like this
$PATH = ${PROJECT}/......./....
In this particular form of scalar variable assignment, what does the curly braces operators do ? Also, what is the benefit in doing scalar assignment this... (3 Replies)
When i tyr this, it gives me a syntax error...i tried removing quotes,removing spaces,replacing -eq with '='.. Can somebody suggest that is the problem?
if ]; then (4 Replies)
Hi,
I am trying to compile a program (not coded by me), and i'm getting this error:
203: error: lvalue required as left operand of assignment
As you may be guessing, the program doesn't compile, the line number 203 is the following:
... (2 Replies)
Hello everyone!
Suppose that I have something like this
A a;
a.mem=new int;
A b = a;
where
class A {
public:
int * mem;
A() : mem(NULL) {
}
~A() {
if (mem!=NULL)
delete mem; (1 Reply)
z < 0 ? z= z + 2*r*cos(theta) : z= z - 2*r*cos(theta);
Does anyone know what is wrong here?
I've got compiler msg:
lvalue required as left operand of assignment
All variables are "double". I'm using gcc compiler (but I don't think that matters) (5 Replies)
Hey all. I've been working on some fun with C and decided to write a Rock Paper Scissors game. The problem is, that when I try to compile the file, it gives "lvalue required as left operand of assignment" error. The error line is here:
for ((point1=0 && point2=0); ((point1=3) || (point2=3));... (4 Replies)
1. After trying to compile code error is given Lvalue required as left operand of assignment.
2. Relevant commands, code, scripts, algorithms:
if , else if
3. The attempts at a solution (include all code and scripts):
/*
File: incircles.cpp
Created by: James Selhorst
... (2 Replies)
Hi,
In the following code,
class A {
public:
void operator=(const A& rhs) {
if (this == &rhs) cout << "self-assigned";
}
};
class B {
A a; // should not be a pointer member, (i.e) A* a
};
int main() {
B b;
b = b; // Ans: self-assigned
}
I am really... (5 Replies)
Hi,
I'm new to the Ash shell so my apologies if this is well known. In normal maths and other shells and languages I've used, the modulo operator always returns a positive remainder. For example see this discussion (first post so I can't hyperlink it):
... (11 Replies)
Discussion started by: FleetFoot
11 Replies
LEARN ABOUT X11R4
libbash
LIBBASH(7) libbash Manual LIBBASH(7)NAME
libbash -- A bash shared libraries package.
DESCRIPTION
libbash is a package that enables bash dynamic-like shared libraries. Actually its a tool for managing bash scripts whose functions you may
want to load and use in scripts of your own.
It contains a 'dynamic loader' for the shared libraries ( ldbash(1)), a configuration tool (ldbashconfig(8)), and some libraries.
Using ldbash(1) you are able to load loadable bash libraries, such as getopts(1) and hashstash(1). A bash shared library that can be loaded
using
ldbash(1) must answer 4 requirments:
1. It must be installed in $LIBBASH_PREFIX/lib/bash (default is /usr/lib/bash).
2. It must contain a line that begins with '#EXPORT='. That line will contain (after the '=') a list of functions that the library
exports. I.e. all the function that will be usable after loading that library will be listed in that line.
3. It must contain a line that begins with '#REQUIRE='. That line will contain (after the '=') a list of bash libraries that are
required for our library. I.e. every bash library that is in use in our bash library must be listed there.
4. The library must be listed (For more information, see ldbashconfig(8)).
Basic guidelines for writing library of your own:
1. Be aware, that your library will be actually sourced. So, basically, it should contain (i.e define) only functions.
2. Try to declare all variables intended for internal use as local.
3. Global variables and functions that are intended for internal use (i.e are not defined in '#EXPORT=') should begin with:
__<library_name>_
For example, internal function myfoosort of hashstash library should be named as
__hashstash_myfoosort
This helps to avoid conflicts in global name space when using libraries that come from different vendors.
4. See html manual for full version of this guide.
AUTHORS
Hai Zaar <haizaar@haizaar.com>
Gil Ran <ril@ran4.net>
SEE ALSO ldbash(1), ldbashconfig(8), getopts(1), hashstash(1)colors(1)messages(1)urlcoding(1)locks(1)Linux Epoch Linux
08-22-2014
