I always thought that parentheses improved readability, but in my textbook there is a statement that the use of parentheses dramatically reduces the readability of a program. Does anyone have any examples? ...
Is there a library for .NET that does parenthesis or expression reduction and optimization? Something that would take an expression such as (A & (((B) | (C)) | D))) and return A & (B | C | D) But also take (A & A) and return A ...
How can I remove nested parentheses recursively in Common LISP Such as (unnest '(a b c (d e) ((f) g))) => (a b c d e f g) (unnest '(a b)) => (a b) (unnest '(() ((((a)))) ())) => (a) Thanks ...
I just spent 3 hours wondering why I couldn't start a session, then realised that I used: session_start; when I should have used: session_start(); I received no error messages at all! Perhaps then, I thought, it's a lazy way to differentiate functions from variables - but then remembered that it can't be as variables require a $ ...
In perl, parentheses are used for overriding precedence (as in most programming languages) as well as for creating lists. How can I tell if a particular pair of parens will be treated as a grouping construct or a one-element list? For example, I'm pretty sure this is a scalar and not a one-element list: (1 + 1) But what about more compl...
I need to write a function par :: String -> Bool to verify if a given string with parentheses is matching using stack module. Ex: par "(((()[()])))" = True par "((]())" = False Here's my stack module implementation: module Stack (Stack, push, pop, top, empty, isEmpty) where data Stack a = Stk [a] ...
Hi I have a code like A = B|C|D|E; Throwing the warning "suggest parentheses around arithmetic in operand of |" Expecting that expression needs high priority paranthesis for operators, tried the following ways: A=(B|C)|(D|E); one more as : A=(((B|C)|D)|E); Still the same warning persists. Please help me in resolving this. ...
I guess I'm not understanding something about C++: I have this code: #include "window.h" int main(int argc, char* argv[]) { Gtk::Main kit(argc, argv); window win(); Gtk::Main::run(win); return EXIT_SUCCESS; } 'window' is a class that inherits from Gtk::Window with an empty constructor. When I try to compile this co...
So the loose tolerance of Ruby to use braces sometimes and not REQUIRE them has led to alot of confusion for me as I'm trying to learn Rails and when/where to use each and why? Sometimes parameters or values are passed as (@user, @comment) and other times they seem to be [ :user => comment ] and still others it's just: :action => 'edit'...
Hello All, I have the following code which works FANTASTIC. Except - It is a sub-query to another (final) outer query and when I attempt to encapsulate this as a sub-query it refuses to run. To make it simple, I just did a "SELECT * FROM ( MY QUERY HERE)" and that even fails to run. I can only figure I am putting the right ")" in the...
For example... I have a link to the home page but when I view the page it looks something like this HOME (http://www.gotohomepage.com) Why is the link showing in parentheses next to the link its self? I just want it to be HOME with no link after it. It is only showing up in chrome, no problem with IE. Here is my code... <p><a...
I've come across some code that surrounds the return value from a method/function in parentheses. What does that do? The code I saw took an image, resized it and then returned it. - (UIImage *)resizeImage:(UIImage *)image { // // some fascinating, but irrelevant, resizing code here // return (image); } ...
I tried using all options in the menu setting Options|Display|Paren Highlighting, but nothing works - no parenthesis match is performed. I also tried setting explicitly (paren-mode 'blink-paren t) in my init file, but that did not help either. Any ideas what may be happening and how do I fix it? Thanks. ...
Today I came across the strange ruby syntax in the Rational class: Rational(a,b) (Notice the absence of the .new()portion compared to the normal Ruby syntax). What does this mean, precisely, compared to the normal new syntax? More importantly, how do I implement something like this in my own code, and why would I implement something...