standards

问题 I know there is -webkit-gradient and -moz-linear-gradient . But what is the standard way of defining a gradient? Like there is: -webkit-border-radius and -moz-border-radius and the standard is meant to be border-radius . 回答1: An update for 2011, the Mozilla syntax is now the 'official' one, adopted by the CSS3 Image Values and Replaced Content Working Draft. Webkit has been updated to use this syntax too, and this has now been incorporated into the latest versions of Chrome and Safari. 回答2:

问题 I test the code in the c++ standard ISO/IEC 14882-03 14.6.1/9 on Xcode 4.1 and Visual Studio 2008. The outputs of the two compiler are both different from the expected result of the standard. The code is pasted below. #include <stdio.h> #include <iostream> using namespace std; void f(char); template <class T > void g(T t) { f(1); f(T(1)); f(t); } void f(int); void h() { g(2); g('a'); } void f(int) { cout << "f int" << endl; } void f(char) { cout << "f char" << endl; } int main() { h(); return

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Where can I find the best set of rules to follow for developing a Delphi application for Windows 7? 回答1: Well, you can check out the Windows User Experience Interaction Guidelines... Mainly, the best thing to keep in mind is to follow the principle of least surprise. Make your app work the way your users expect

问题 Most SQL databases follow the ANSI SQL standards to a degree, but The standard is ambiguous, leaving some areas open to interpretation (eg: how different operations with NULLs should be handled is ambiguous) Some vendors contradict the standard outright or just lack functionality defined by the standard (eg: MySQL has a list of differences between the standard and their implementation) Some databases will behave differently depending on how they are configured, but configuration can be

问题 The ISO C Standard (ISO/IEC 9899) and the ISO C++ Standard (ISO/IEC 14882) are not published online; instead, one must purchase the PDF for each of those standards. I am wondering what the rationale is behind this... is it not detrimental to both the C and C++ programming languages that the authoritative specification for these languages is not made freely available and searchable online? Doesn't this encourage the use of possibly inaccurate, non-authoritative sources for information

问题 I apologize if this is a subjective or repeated question. It's sort of awkward to search for, so I wasn't sure what terms to include. What I'd like to know is what the basic foundation tools/functions are in C when you don't include standard libraries like stdio and stdlib . What could I do if there's no printf() , fopen() , etc? Also, are those libraries technically part of the "C" language, or are they just very useful and effectively essential libraries? 回答1: The C standard has this to say

问题 From 10.4 Abstract Classes parag. 6 in the Standard : "Member functions can be called from a constructor (or destructor) of an abstract class; the effect of making a virtual call to a pure virtual function directly or indirectly for the object being created (or destroyed) from such a constructor (or destructor) is undefined." Assuming that a call to a non-pure virtual function from a constructor (or destructor), is allowed by the Standard, why the difference ? [EDIT] More standards quotes

问题 I keep seeing reference to both the C++ standard Library and the C++ Standard Template Library (STL). What is the difference between them? Wikipedia mentions that they share some headers but that's about it. 回答1: The Standard Template Library (STL) is a library of containers, iterators, algorithms, and function objects, that was created by Alexander Stepanov; the SGI website has the canonical implementation and documentation. The standard library is the library that is part of C++; it

问题 I am going through a large website (1600+ pages) to make it pass Priority 1 W3C WAI. As a result, things like image tags need to have alt attributes. What would be the regular expression for finding img tags without alt attributes? If possible, with a wee explanation so I can use to find other issues. I am in an office with Visual Web Developer 2008. The Edit >> Find dialogue can use regular expressions. 回答1: This is really tricky, because regular expressions are mostly about matching

问题 My PHP script is displaying an error: Strict Standards: Only variables should be passed by reference in C:\....*.php on line 551 The code is below: function trinity_premissions() { global $ACC_PDO, $WEB_PDO, $a_user, $db_translation; $end = false; $res = $WEB_PDO->prepare("SELECT acc_login, gmlevel FROM `accounts_more` WHERE UPPER(acc_login) = :acc"); /* 551 */$res->bindParam(':acc', strtoupper($a_user[$db_translation['login']]), PDO::PARAM_STR); $res->execute(); if ($res->rowCount() == 1) {