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What is the purpose of using -pedantic in GCC/G++ compiler?

...f more extensions and generates more warnings. For example, if you have a string literal longer than 509 characters, then -pedantic warns about that because it exceeds the minimum limit required by the C89 standard. That is, every C89 compiler must accept strings of length 509; they are permitted ...
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What are copy elision and return value optimization?

.... Copy elision is an optimization implemented by most compilers to prevent extra (potentially expensive) copies in certain situations. It makes returning by value or pass-by-value feasible in practice (restrictions apply). It's the only form of optimization that elides (ha!) the as-if rule - copy el...
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What does “fragment” mean in ANTLR?

...lly they'll improve readability of your grammars. look at this example : STRING : '"' (ESC | ~["\\])* '"' ; fragment ESC : '\\' (["\\/bfnrt] | UNICODE) ; fragment UNICODE : 'u' HEX HEX HEX HEX ; fragment HEX : [0-9a-fA-F] ; STRING is a lexer using fragment rule like ESC .Unicode is used in Esc r...
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What is a lambda expression in C++11?

...n false ; return true ; }()) // i is all whitespace, assuming i is an std::string – Blacklight Shining Mar 2 '13 at 1:13 ...
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How to remove first 10 characters from a string?

How to ignore the first 10 characters of a string? 12 Answers 12 ...
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Multi-statement Table Valued Function vs Inline Table Valued Function

...urned only tables formatted like 'C_______' then the outer query did a sub-string and int conversion. ie Cast(Substring(2, 2) as int) as CompNo. All looks good except that sql server decided to put my Cast function before the results were filtered and so I get a mind scrambling conversion error. A...
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Pointers in C: when to use the ampersand and the asterisk?

... the pointer. But things work differently when you're working with arrays, strings or when you're calling functions with a pointer copy of a variable. It's difficult to see a pattern of logic inside all of this. ...
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Difference between signed / unsigned char [duplicate]

...gnify if the number if positive or negative, but how does this apply to a char ? How can a character be positive or negative? ...
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Send Email Intent

....")); Update: According to marcwjj, it seems that on 4.3, we need to pass string array instead of a string for email address to make it work. We might need to add one more line: intent.putExtra(Intent.EXTRA_EMAIL, addresses); // String[] addresses Ref link ...
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How to make a SPA SEO crawlable?

...mous] public HttpResponseMessage Handle404() { string [] parts = Request.RequestUri.OriginalString.Split(new[] { '?' }, StringSplitOptions.RemoveEmptyEntries); string parameters = parts[ 1 ].Replace("aspxerrorpath=",""); var response = Request.Crea...