Possible Duplicate: C# var vs specific type performance I use the 'var' keyword extensively. A colleague told me there was a performance hit in using it, but couldnt back up his comment. Does anyone know of such a performance hit? ...
What are some of the best practices for clean code, naming conventions and documentation for PHP? I see users/people saying this is a bad practice, Example: // Create an array to hold x values $arr_x = array(); That this is a unnecessary comment cause the syntax alone explains the functionality. That is should be more of a header com...
Possible Duplicate: Javascript === vs == : Does it matter which equal operator I use? Why do I see lots of javascript code lately with expressions that look like this: if(val === "something") Why "===" instead of just "=="? What's the difference? When should I use one or the other? ...
someone already asked this question, but the thread ended up with the original question not getting answered. suppose you have this: template<size_t i, class f_type> void call_with_i(f_type f); functor_type is either: a) a struct with a method that has the following signature: template<size_t i> operator()() const; or, b) a fun...
In general, the PHPDOC properties are self-explanatory, but I'm having hard time understanding these: @category - what is this exactly? @package - could some one provide me examples about the usage of this property? ...
Howdy! I'm working on an old project from one of my programming courses and having some issues tracking down which line in my code is causing a syntax error. When I attempt to compile the code, Visual Studio tells me that there is a syntax error towards the end of main on the line containing this function call: sortData(carray, numRe...
I'm porting an existing java library to actionscript and since they are both realy similar, 95% of the work is simply flipping variable and function definition around. public int foo(int bar) {} //converts to public function foo(bar:int):void {} Boring stuff. Is there a tool to automate the transition between java syntax and actionsc...
While reading some stuff on the pImpl idiom I found something like this: MyClass::MyClass() : pimpl_( new MyClassImp() ) First: What does it mean? Second: What is the syntax? Sorry for being such a noob. ...
I have a Haskell file which looks like this: longest::[Integer]->[Integer]->[Integer] max a b = if length a > length b then a else b llfs::[Integer]->Integer llfs li = length(foldl longest group(li)) llfs([1, 2, 3, 3, 4, 5, 1, 1, 1]) Which should print out the result of the function call at the end, however when I run the file I get...
ALTER TABLE Physician Modify (RefLastName nvarchar(500), RefFirstName nvarchar(500)); Getting Incorrect syntax error... ...
Possible Duplicate: Why must I put a semicolon at the end of class declaration in C++? Found duplicate, vote to close please. Why do classes and structs have to be concluded with semicolon in C++? Like in the following code: class myClass { }; struct muStruct { }; This syntax isn't necessary in Java or C#. Why does the...
Hi guys, I have an assignment using MFC which is a completely foreign language to me. I have to be able to upload Image1, and Image2 into 2 picture controls. And using a slider: when it is on the far left, you see Image1 in a third picture control, when it is on the far right you see Image2. Anywhere in between you should see a transitio...
Using pyparser, I am trying to create a very simple parser for the S-Expression language. I have written a very small grammar. Here is my code: from pyparsing import * alphaword = Word(alphas) integer = Word(nums) sexp = Forward() LPAREN = Suppress("(") RPAREN = Suppress(")") sexp << ( alphaword | integer | ( LPAREN + ZeroOr...
I just read this answer http://stackoverflow.com/questions/1791639/regular-expression-in-ruby-to-convert-uppercase-title-into-lowercase/1792102#1792102. There is the following line of code "abc".split(/(\W)/).map(&:capitalize).join What exactly is &:capitalize? Before I had put this into irb myself, I would have told you, it's not va...
I'm using CodeLite on Ubuntu and for some bizzare reason GCC keeps throwing this error whenever I try to compile code with a function that returns a pointer to a struct: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token Here is an example I wrote up to demonstrate this error: #include <stdio.h> typedef struct ...
Hi, i m having a little syntax problem in my query (simplified) : select * from table1 t1 inner join table2 t2 using (pk1) inner join table3 t3 using (pk2) where not exists (select1 from table4 t4 where t4.pk1 = t1.pk1) By using the "using" keyword, oracle doesnt allow table identifier in front of the column name (eg : t1.pk1, only p...
I'm trying to convert a preexisting javascript function into a jQuery function. The function comes from http://javascript.internet.com/forms/zip-to-state.html and aims to convert a user-entered zip code into a state. I'm using jQuery 1.3.2, with all the necessary plugins, but I'm not very familiar with jQuery syntax and how to convert th...
In access i used this and its works fine: (tblReservations_Dates.Date) Between #" & dteBegDate & "# And #" & dteEndDate & "# Using MySQL I used this: (tblReservations_Dates.Date) Between '" & dteBegDate & "' And '" & dteEndDate & "' However the data is not displayed I was just wondering if this is the correct syntax for SQL Stateme...
Is it possible to use "or" or "and" in a switch case? Here's what I'm after: case 4 || 5: echo "Hilo"; break; ...
I am new to php and would like to know if there are any differences between these server tags : <?php ?> and <? ?> ...