parameters

问题 I tried to modify the value of a string inside a function, like below: >>> def appendFlag(target, value): ... target += value ... target += " " ... >>> appendFlag <function appendFlag at 0x102933398> >>> appendFlag(m,"ok") >>> m '' Well, seems the "target" is only changed within the function, but how to make the new value viable outside the function? Thanks. 回答1: This is handled in python by returning. def appendFlag(target, value): target += value target += " " return target you can use it

问题 I tried to modify the value of a string inside a function, like below: >>> def appendFlag(target, value): ... target += value ... target += " " ... >>> appendFlag <function appendFlag at 0x102933398> >>> appendFlag(m,"ok") >>> m '' Well, seems the "target" is only changed within the function, but how to make the new value viable outside the function? Thanks. 回答1: This is handled in python by returning. def appendFlag(target, value): target += value target += " " return target you can use it

问题 The following code sample prints: T T[] T[] While first two lines are as expected, why compiler selected param array for a regular array? public class A { public void Print<T>(T t) { Console.WriteLine("T"); } public void Print<T>(params T[] t) { Console.WriteLine("T[]"); } } class Program { static void Main(string[] args) { A a = new A(); a.Print("string"); a.Print("string","string"); a.Print(new string[] {"a","b"}); } } 回答1: Under the hood a.Print("string","string"); is just syntactic sugar

问题 I am trying to get dbGetQuery to retrieve all rows referenced in a char list (test_ID2) from a SybaseIQ table (test_in). The result is that only the first entry in test_ID2 is retrieved. the dbGetQuery() looks like this: test_con <- DBI::dbConnect(odbc::odbc(), driver = 'SybaseIQ', host = 'xxx.xx.xxx', port = 'xxxx', uid = 'xxxx', pwd = 'xxxx') test_out <- dbGetQuery(test_con,"SELECT * FROM test_in WHERE ID2 = ?", params = list(test_ID2)) test_in looks like this: > test_in ID1 DATE ID2 QTY

问题 I am trying to get dbGetQuery to retrieve all rows referenced in a char list (test_ID2) from a SybaseIQ table (test_in). The result is that only the first entry in test_ID2 is retrieved. the dbGetQuery() looks like this: test_con <- DBI::dbConnect(odbc::odbc(), driver = 'SybaseIQ', host = 'xxx.xx.xxx', port = 'xxxx', uid = 'xxxx', pwd = 'xxxx') test_out <- dbGetQuery(test_con,"SELECT * FROM test_in WHERE ID2 = ?", params = list(test_ID2)) test_in looks like this: > test_in ID1 DATE ID2 QTY

问题 I am trying to get dbGetQuery to retrieve all rows referenced in a char list (test_ID2) from a SybaseIQ table (test_in). The result is that only the first entry in test_ID2 is retrieved. the dbGetQuery() looks like this: test_con <- DBI::dbConnect(odbc::odbc(), driver = 'SybaseIQ', host = 'xxx.xx.xxx', port = 'xxxx', uid = 'xxxx', pwd = 'xxxx') test_out <- dbGetQuery(test_con,"SELECT * FROM test_in WHERE ID2 = ?", params = list(test_ID2)) test_in looks like this: > test_in ID1 DATE ID2 QTY

问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 10 months ago . Improve this question I am making a game engine with C++ and Opengl. I making a small game to test my incomplete engine. But after adding classes like Camera, Renderder, Level, Player, Zombie and Human, My Player class's function parameters getting long about 8 arguments because

问题 I have a problem getting my route to work. I have based the route organisation on : Organizing your app routes with the Express 4 Router Here is app.js : var express = require('express'); var router = express.Router(); express.use('/object-settings', require("./route/object-settings"); express.use('/object-settings-edit', require("./route/object-settings-edit"); Now the file object-settings var express = require('express'); var router = express.Router(); router.get('/', function (req, res) {

问题 I added a Parameter to report.rdlc called "ReportTitle". It is text and allows blank values and nulls. I have tried different ways to pass the parameter value to no avail. This is what I've tried so far: Dim parReportParam1 As New ReportParameter("ReportTitle", "THIS IS MY TITLE") ReportViewer1.LocalReport.SetParameters(New ReportParameter() {parReportParam1}) Does not work! Dim params(0) As Microsoft.Reporting.WinForms.ReportParameter params(0) = New Microsoft.Reporting.WinForms

问题 I added a Parameter to report.rdlc called "ReportTitle". It is text and allows blank values and nulls. I have tried different ways to pass the parameter value to no avail. This is what I've tried so far: Dim parReportParam1 As New ReportParameter("ReportTitle", "THIS IS MY TITLE") ReportViewer1.LocalReport.SetParameters(New ReportParameter() {parReportParam1}) Does not work! Dim params(0) As Microsoft.Reporting.WinForms.ReportParameter params(0) = New Microsoft.Reporting.WinForms