parameter-passing

问题 I am trying to pass a coordinate, which is defined as struct with 2 integer parameters (the struct is called coord) the following way: UpdateB({0,0}); where the input argument is of type coord (i.e. in the above statement I am trying to pass a coordinate 0,0 ). UpdateB is some function. I am getting an error, any ideas what the problem could be? 回答1: Make a constructor accepting two argumnets. Pass it as follows: MyFunc(Point2d(0,0)); 回答2: Pavel's got it spot on. If you want to create the

问题 How should I make function with lesser dimensionality than the original one by fixing an argument of it: For example I want to make successor function out of sum function as follows: def add(x,y): return x+y Now I am looking for something like this: g=f(~,1) which would be the successor function, i.e. g(x)=x+1 . 回答1: You can write your own function: def g(y): return f(2, y) Or more concisely: g = lambda y: f(2, y) There's also functools.partial : import functools def f(x, y): return x + y g =

问题 Say I have a function defined thus: def inner_func(spam, eggs): # code I then want to call a function like this: outer_func(spam=45, eggs="blah") Inside outer_func I want to be able to call inner_func with exactly the same parameters that were passed into outer_func . This can be achieved by writing outer_func like this: def outer_func(spam, eggs): inner_func(spam, eggs) However, I'd like to be able to change the arguments inner_func takes, and change the parameters I pass to outer_func

问题 I have seen a few different examples of accessing $(this) is the success callback of ajax but none give me the answer I want - they all access $(this) within the ajax function, I want to pass $(this) to a separate function. So if there are 2 textboxes that need to be validated $("#tb1").focusout(function(){ $.ajax({ type:'POST', url: 'validURL', data: {various_parameters}, contentType: 'application/json; charset=utf-8', dataType:'json', success: function(data){ validInput(data, $(this)); },

问题 I have seen a few different examples of accessing $(this) is the success callback of ajax but none give me the answer I want - they all access $(this) within the ajax function, I want to pass $(this) to a separate function. So if there are 2 textboxes that need to be validated $("#tb1").focusout(function(){ $.ajax({ type:'POST', url: 'validURL', data: {various_parameters}, contentType: 'application/json; charset=utf-8', dataType:'json', success: function(data){ validInput(data, $(this)); },

问题 I have two PowerShell scripts, which have switch parameters: compile-tool1.ps1: [CmdletBinding()] param( [switch]$VHDL2008 ) Write-Host "VHDL-2008 is enabled: $VHDL2008" compile.ps1: [CmdletBinding()] param( [switch]$VHDL2008 ) if (-not $VHDL2008) { compile-tool1.ps1 } else { compile-tool1.ps1 -VHDL2008 } How can I pass a switch parameter to another PowerShell script, without writing big if..then..else or case statements? I don't want to convert the parameter $VHDL2008 of compile-tool1.ps1 to

问题 I have two PowerShell scripts, which have switch parameters: compile-tool1.ps1: [CmdletBinding()] param( [switch]$VHDL2008 ) Write-Host "VHDL-2008 is enabled: $VHDL2008" compile.ps1: [CmdletBinding()] param( [switch]$VHDL2008 ) if (-not $VHDL2008) { compile-tool1.ps1 } else { compile-tool1.ps1 -VHDL2008 } How can I pass a switch parameter to another PowerShell script, without writing big if..then..else or case statements? I don't want to convert the parameter $VHDL2008 of compile-tool1.ps1 to

问题 I have a dataset with a parameter as which is passed to a query as shown below. The issue here is DataSet parameter queryOptions does not accept the value from the Report Parameter Date . If i hardcode any value e.g <CalendarDate> 08/11/2012 </CalendarDate> instead of <CalendarDate> = Parameters!Date.Value </CalendarDate> the report works fine. What wrong am i doing while passing parameter. I even created another Dataset Parameter named Date and assigned Parameter Value [@Date] even that did

问题 I am attempting on creating multiple threads that each thread calculates a prime. I am trying to pass a second argument to a function using thread create. It keeps throwing up errors. void* compute_prime (void* arg, void* arg2) { here is my main() with the create thread. &primeArray[i] after &max_prime is giving me the errors. for(i=0; i< num_threads; i++) { primeArray[i]=0; printf("creating threads: \n"); pthread_create(&primes[i],NULL, compute_prime, &max_prime, &primeArray[i]); thread

问题 I've got a program that I want to call by passing parameters from a shell variable. Throughout this question, I am going to assume that it is given by #!/bin/sh echo $# i.e. that it prints out the number of arguments that are passed to it. Let's call it count-args . I call my program like this: X="arg1 arg2" count-args $X This works quite well. But now one of my arguments has a whitespace in it and I can't find a way to escape it, e.g. the following things do not work: X="Hello\ World" X=