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Stack, Static, and Heap in C++

...e is only one copy for the entire program. No matter how many times you go into a function call (or class) (and in how many threads!) the variable is referring to the same memory location. The heap is a bunch of memory that can be used dynamically. If you want 4kb for an object then the dynamic all...
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Getting a better understanding of callback functions in JavaScript

... this enhance performance? This is like checking the type, checking if the converted boolean returns true and then checking its type again and testing it against the string... Could you explain why? – headacheCoder Oct 21 '13 at 12:41 ...
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Spring Boot Rest Controller how to return different HTTP status codes?

... @ResponseStatus(HttpStatus.CONFLICT) // 409 @ExceptionHandler(DataIntegrityViolationException.class) public void handleConflict() { // Nothing to do } } Also you can pass HttpServletResponse to controller method and just set response code: public RestModel create(@Request...
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UPDATE and REPLACE part of a string

... CREATE TABLE tbl_PersonalDetail (ID INT IDENTITY ,[Date] nvarchar(20), Name nvarchar(20), GenderID int); INSERT INTO Tbl_PersonalDetail VALUES(N'18-4-2015', N'Monay', 2), (N'31-3-2015', N'Monay', 2), ...
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What are rvalues, lvalues, xvalues, glvalues, and prvalues?

... I guess this document might serve as a not so short introduction : n3055 The whole massacre began with the move semantics. Once we have expressions that can be moved and not copied, suddenly easy to grasp rules demanded distinction between expressions that can be moved, and i...
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Java: Check if enum contains a given string?

...ontain many values, perhaps builda HashSet or similar of your enum values converted to a string and query that HashSet instead. share | improve this answer | follow ...
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Set database from SINGLE USER mode to MULTI USER

...ter GO DECLARE @kill varchar(8000) = ''; SELECT @kill = @kill + 'kill ' + CONVERT(varchar(5), spid) + ';' FROM master..sysprocesses WHERE dbid = db_id('<yourDbName>') EXEC(@kill); Then immediately after (in second query window): USE master ALTER DATABASE <yourDbName> SET OFFLINE WI...
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R: += (plus equals) and ++ (plus plus) equivalent from c++/c#/java, etc.?

...ement operator was introduced to make job for compiler easier, as it could convert the code to those machine language instructions directly. share | improve this answer | fol...
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How do you reindex an array in PHP?

...like Gumbo posted. However, to answer your question, this function should convert any array into a 1-based version function convertToOneBased( $arr ) { return array_combine( range( 1, count( $arr ) ), array_values( $arr ) ); } EDIT Here's a more reusable/flexible function, should you desire...
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Python division

...hat always pops in my head when I am doing arithmetic operations (should I convert to float and which number), an example from that aspect is presented: >>> a = 1/2/3/4/5/4/3 >>> a 0 When we divide integers, not surprisingly it gets lower rounded. >>> a = 1/2/3/4/5/4/f...