constants

问题 Go features untyped exact numeric constants with arbitrary size and precision. The spec requires all compilers to support integers to at least 256 bits, and floats to at least 272 bits (256 bits for the mantissa and 16 bits for the exponent). So compilers are required to faithfully and exactly represent expressions like this: const ( PI = 3.1415926535897932384626433832795028841971 Prime256 = 84028154888444252871881479176271707868370175636848156449781508641811196133203 ) This is interesting..

问题 nvcc device code has access to a built-in value, warpSize , which is set to the warp size of the device executing the kernel (i.e. 32 for the foreseeable future). Usually you can't tell it apart from a constant - but if you try to declare an array of length warpSize you get a complaint about it being non-const... (with CUDA 7.5) So, at least for that purpose you are motivated to have something like ( edit ): enum : unsigned int { warp_size = 32 }; somewhere in your headers. But now - which

问题 In my objective-c project, I have a protocol like this: @protocol MyProtocol -(id) get:(NSString *) key; -(void) set:(NSString *) key withValue:(id) value; -(NSValue *) getSize; -(void) setSize:(NSValue *) value; -(NSValue *) getBounds; -(void) setBounds:(NSValue *) value; @end OBJC_EXPORT const NSString *MYPROTOCOL_SIZE; OBJC_EXPORT const NSString *MYPROTOCOL_BOUNDS; And basically, those specific methods ( getSize , getBounds , setSize , setBounds ) are supposed the value that is supposed to

问题 I've this snippet of code in main layout file (protected/views/layouts/main.php): <?php if (defined('YII_DEBUG')) { ?> <button id="search-hidden-button"></button> <script> $(function(){ $('#search-hidden-button').click(function(){ $('#search-query-form').submit(); }); }); </script> <?php } ?> But I get this error and I dont know why: Use of undefined constant - assumed ' ' <?php if (true) { ?> <button id="search-hidden-button"></button> <script> $(function(){ $('#search-hidden-button').click

问题 Sorry in advance, I'm a self-taught VBA programmer, and I'm not sure how to phrase my question! I've declared constants which have similar names, i.e. Public Const BP1Enable = "something1something:someotherthing1someotherthing" public const BP2Enable = "something2something:someotherthing2someotherthing" etc. I have 10 of these constants. I have a sub with these constants as arguments: Sub FieldEnable (ByVal enableconst) Now I want to call the FieldEnable sub in a loop using i as counter: For

问题 I would like to be able reference a public constant in a cell formula. I have found multiple references to defining constants from cell values, but not for using constants in formulas. I would like to be able do something like this (I know that this is not the right syntax, but you get the idea...) ="Some formula text " & myPublicConstantName Ideas? Thank! 回答1: Your public constant lives in a standard module, and probably looks something like this: Public Const Foo As Long = 42 You can expose

问题 I'm working on a programming project (mancala) and have gotten stuck when writing an array. I need to write an array that fills all board bins with the value of four, and then resets two bins to 0. So far I only have { int i; int beadArray[MAX] = {4}; for (i = 0; i < MAX; i++) { beadArray[i] = -1; } for (i = 0; i < MAX; i++) { cout<<i<<"\t"; } 回答1: int beadArray[MAX] = {4}; This line initializes the first element to 4, and the rest to 0, not all of them to 4. Something using vectors would be

问题 I've the header file in which I declare some constants with extern: #ifndef CONSTANTS_H #define CONSTANTS_H #include <string> class Constants { public: Constants(){} extern const std::string DELIMITER; extern const std::string FILENAME; extern const int BLUCAR; extern const int REDCAR; extern const int EMPTY; extern const int SPARSE_LIM; protected: private: }; #endif // CONSTANTS_H Then in the source I define them like this: #include "constants.h" extern const std::string DELIMITER = ",";

问题 Grunt has syntax which is used to set and update configuration properties before task execution. For example, config { dist: { dir: "dir1" }, clean: { dirs: [ '<dist.dir>' ] } } becomes in memory to ... config { dist: { dir: "dir1" }, clean: { dirs: [ "dir1" ] } } What npm module is responsible for this? Please, advice me how to implement it in a better way? Thank you! 回答1: Template Strings within Grunt come from the Lo-Dash package. References: Grunt.template LoDash Template 来源： https:/

问题 As we all know, C++'s memory model can be divided to five blocks: stack, heap, free blocks, global/static blocks, const blocks. I can understand the first three blocks and I also know variables like static int xx are stored in the 4th blocks, and also the "hello world"-string constant, but what is stored in the 5th blocks-const blocks? and , like int a = 10 , where does the "10" stored? Can someone explain this to me? Thanks a lot. 回答1: There is a difference between string literals and