parameter-passing

问题 I want to compare my comma delimited string with column values. I did the following, which is not returning the expected result. ll = '"Java,CPP"' is coming dynamically. create or replace function testing(ll text) returns void as $body$ Declare foo text[]; ko text[]; BEGIN select unique_code into foo from codings where unique_code = ANY (regexp_split_to_array(ll, '\,')); raise info '%',foo; END; $body$ Language plpgsql; I got below error ERROR: column "Java,CPP" does not exist LINE 1: SELECT

问题 (with C# 3.0 and VS 2008). Doing MVVM WPF stuff you often write properties like this: public bool MyProperty { get{return _myProperty;} set{ if(_myProperty == value)return; _myProperty = value; RaisePropertyChanged("MyProperty"); } } Doing TDD I often end up writing tests such as: [Test] public void MyPropertyRaisesPropertyChangedWhenChanged(){ var mySUT = CreateSUT(); bool eventRaised = false; string propName = ""; mySUT.PropertyChanged += (s,e)=>{eventRaised = true;propName = e.PropertyName

问题 (with C# 3.0 and VS 2008). Doing MVVM WPF stuff you often write properties like this: public bool MyProperty { get{return _myProperty;} set{ if(_myProperty == value)return; _myProperty = value; RaisePropertyChanged("MyProperty"); } } Doing TDD I often end up writing tests such as: [Test] public void MyPropertyRaisesPropertyChangedWhenChanged(){ var mySUT = CreateSUT(); bool eventRaised = false; string propName = ""; mySUT.PropertyChanged += (s,e)=>{eventRaised = true;propName = e.PropertyName

问题 I am currently working on an API Wrapper, and I have an issue with passing the parameters from a function, into the payload of requests. The parameters can be blockId, senderId, recipientId, limit, offset, orderBy. All parameters join by "OR". One possible solution could be having if statements for every combination, but I imagine that that is a terrible way to do it. (requests and constants are already imported) def transactionsList(*args **kwargs): if blockId not None: payload = {'blockId':

问题 I am currently working on an API Wrapper, and I have an issue with passing the parameters from a function, into the payload of requests. The parameters can be blockId, senderId, recipientId, limit, offset, orderBy. All parameters join by "OR". One possible solution could be having if statements for every combination, but I imagine that that is a terrible way to do it. (requests and constants are already imported) def transactionsList(*args **kwargs): if blockId not None: payload = {'blockId':

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . Improve this question I want to pass directory of Makefile to a function. For example: Makefile $(DIR) = makefile directory program int main(int argc,char argv[]) char directory = argv[1] How can I do that? EDIT Clarificaion. I want my app to work outside of the directory that i compiled it in. 回答1

问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 3 years ago . Improve this question I want to pass directory of Makefile to a function. For example: Makefile $(DIR) = makefile directory program int main(int argc,char argv[]) char directory = argv[1] How can I do that? EDIT Clarificaion. I want my app to work outside of the directory that i compiled it in. 回答1

问题 I have a small python script, which uses argparse to let the user define options. It uses two flags for different modes and an argument to let the user define a file. See the simplified example below: #!/usr/bin/python3 import argparse from shutil import copyfile def check_file(f): # Mock function: checks if file exists, else "argparse.ArgumentTypeError("file not found")" return f def main(): aFile = "/tmp/afile.txt" parser = argparse.ArgumentParser(description="An example",formatter_class

问题 I have this sample code: public class MyClass { public int Value { get; set; } } class Program { public static void Foo(MyClass v) { v.Value = 2; v = new MyClass(); v.Value = 3; } static void Main(string[] args) { var m = new MyClass(); m.Value = 1; Foo(m); Console.Write(m.Value); Console.ReadLine(); } } I would like to understand why the output is 2 and not 3, could you please give me some clear explanation? Thanks 回答1: I will go through with you, step by step via the debugger and we will

问题 There are 3 ways to pass arrays as function arguments. Formal parameters as a pointer , e.g., void myFunction(int *param) {} Formal parameters as a sized array , e.g., void myFunction(int param[10]) {} Formal parameters as an unsized array , e.g., void myFunction(int param[]) {} Which way is better in terms of efficiency and readability? 回答1: Which way is better to pass arrays as function arguments in C? I am going for Door #4. The receiving function needs to know the size. void myFunction