expression-evaluation

Evaluate() in VBA

末鹿安然 提交于 2019-11-30 05:33:33
Hi and welcome to the Evaluate() mystery The MSDN Office Developer Reference (2013) Documentation says: Using square brackets (for example, "[A1:C5]") is identical to calling the Evaluate method with a string argument. So, I have ran a very simple code to see how accurate the Microsoft's Documentation of the Evaluate() method is. Not surprisingly, I am getting a strange albeit consistent result. note: execute each of the 4 commands in the Immediate Window CTRL + G . See the difference in each of the calls . Notice the built-in bug which shows each MsgBox twice . Just keep that in mind and do

Does Java strictfp modifier have any effect on modern CPUs?

我怕爱的太早我们不能终老 提交于 2019-11-28 09:59:22
I know the meaning of the strictfp modifier on methods (and on classes), according to the JLS: JLS 8.4.3.5, strictfp methods: The effect of the strictfp modifier is to make all float or double expressions within the method body be explicitly FP-strict (§15.4). JLS 15.4 FP-strict expressions: Within an FP-strict expression, all intermediate values must be elements of the float value set or the double value set, implying that the results of all FP-strict expressions must be those predicted by IEEE 754 arithmetic on operands represented using single and double formats. Within an expression that

Why is “a^=b^=a^=b;” different from “a^=b; b^=a; a^=b;”?

喜夏-厌秋 提交于 2019-11-28 07:31:01
I tried some code to swap two integers in Java without using a 3rd variable, using XOR. Here are the two swap functions I tried: package lang.numeric; public class SwapVarsDemo { public static void main(String[] args) { int a = 2984; int b = 87593; swapDemo1(a,b); swapDemo2(a,b); } private static void swapDemo1(int a, int b) { a^=b^=a^=b; System.out.println("After swap: "+a+","+b); } private static void swapDemo2(int a, int b) { a^=b; b^=a; a^=b; System.out.println("After swap: "+a+","+b); } } The output produced by this code was this: After swap: 0,2984 After swap: 87593,2984 I am curious to

Boost::spirit how to parse and call c++ function-like expressions

廉价感情. 提交于 2019-11-27 21:44:31
I want to use boost spirit to parse an expression like function1(arg1, arg2, function2(arg1, arg2, arg3), function3(arg1,arg2)) and call corresponding c++ functions. What should be the grammar to parse above expression and call the corresponding c++ function by phoneix::bind()? I have 2 types of functions to call 1) string functions; wstring GetSubString(wstring stringToCut, int position, int length); wstring GetStringToken(wstring stringToTokenize, wstring seperators, int tokenNumber ); 2) Functions that return integer; int GetCount(); int GetId(wstring srcId, wstring srcType); Second Answer

Why is “a^=b^=a^=b;” different from “a^=b; b^=a; a^=b;”?

試著忘記壹切 提交于 2019-11-27 01:49:49
问题 I tried some code to swap two integers in Java without using a 3rd variable, using XOR. Here are the two swap functions I tried: package lang.numeric; public class SwapVarsDemo { public static void main(String[] args) { int a = 2984; int b = 87593; swapDemo1(a,b); swapDemo2(a,b); } private static void swapDemo1(int a, int b) { a^=b^=a^=b; System.out.println("After swap: "+a+","+b); } private static void swapDemo2(int a, int b) { a^=b; b^=a; a^=b; System.out.println("After swap: "+a+","+b); }

Boost::spirit how to parse and call c++ function-like expressions

末鹿安然 提交于 2019-11-26 20:51:04
问题 I want to use boost spirit to parse an expression like function1(arg1, arg2, function2(arg1, arg2, arg3), function3(arg1,arg2)) and call corresponding c++ functions. What should be the grammar to parse above expression and call the corresponding c++ function by phoneix::bind()? I have 2 types of functions to call 1) string functions; wstring GetSubString(wstring stringToCut, int position, int length); wstring GetStringToken(wstring stringToTokenize, wstring seperators, int tokenNumber ); 2)