parameters

问题 I suppose this: public static string abc() { return "abc"; } Is better to call this function in this way: string call = abc(); Console.writeline(call); Than this? console.writeline(abc()); is there any reason to prefer one to the other? 回答1: Both are valid. However, out of experience I have concluded that the first option is more suitable for readability and ease of maintenance. I can't count how many times I have changed from the "compact" style to the first one as a help for a debugging

问题 When a C# function has an output parameter, you make that clear as follows: private void f(out OutputParameterClass outputParameter); This states that the parameter does not have to be initialized when the function is called. However, when calling this function, you have to repeat the out keyword : f(out outputParameter); I am wondering what this is good for. Why is it necessary to repeat part of the function specification? Does anyone know? 回答1: It means you know what you're doing - that you

问题 I have data imported into a temporary table in MSAccess which looks like this: to which I have added the "Gap" and "Previous/Current" columns that I need to calculate using an SQL Query. The "Gap Threshold" is User input or PARAMETER supplied to Query and for e.g. is 300. The GlobalID groups ItemID's whereas each ItemID is unique number. What i want to do is calculate the GAP (GAP = TEMPORARY_1![VERSION DATE] - TEMPORARY![VERSION DATE]) between ItemID's of similar GlobalID's and identify the

问题 I have a dynamic amount of arrays in a specific array. Let's call this specific array: FatherArray This FatherArray has a dynamic amount of arrays in it, right now for example: Child1Array , Child2Array . Next time it gets called it could have more or less than those 2 Child(number)Arrays. So I want to use the function array_intersect() with the arrays (children) of FatherArray as parameters, so like array_intersect(Child1Array,Child2Array). I don't have a clue how i could do this dynamically

问题 I have a dynamic amount of arrays in a specific array. Let's call this specific array: FatherArray This FatherArray has a dynamic amount of arrays in it, right now for example: Child1Array , Child2Array . Next time it gets called it could have more or less than those 2 Child(number)Arrays. So I want to use the function array_intersect() with the arrays (children) of FatherArray as parameters, so like array_intersect(Child1Array,Child2Array). I don't have a clue how i could do this dynamically

问题 I have a main .fla file that I am using to load a sequence of three games. If the user wins a game, they go on to the next game. Is it in any way possible to pass to the main project whether the user has won the game? I have tried using loader.content, but that does not seem to be working. I am using Flash CS3. 回答1: You can pass data to and from loaded swfs no problem. What it sounds like you are trying to do is communicate from the loaded swf to the loading swf. The ideal way to do this is

问题 I am new to socket programming, so I'm sorry if this is a noob question. I have a program in C for Linux, which connects two sockets from "server.c" to two "client.c"s with the help of fork(). It works just fine most of the time, but there are times when the second client gets stuck before the first recv() function. On these occasions, the server doesn't accept() the connection and I am confused as to what is truly happening and how I can fix it. Since I don't know much about socket

问题 My client sends me a JSON file which as follows: { "onlineRequest":{ "MobileNumber":"75484568", "ProductNo":"100", "JsonFile":{ "evaluation":{ "number":[ { "@para-id":"5656", "@new-code":"", "@text":"Hello America" }, { "@para-id":"3302", "@new-code":"100", "@text":"Hello UK" } ], "dropdown":[ { "@para-id":"2572", "@new-code":"", "@text":"This is first dropdown", "option":[ { "@text":"Option 1", "@value":"0" } ] }, { "@para-id":"2584", "@new-code":"", "@text":"This is second dropdown",

问题 I have a sparse matrix in AMPL. As a result, it includes a lot of values that are coded as ".". The "." value in AMPL means "no value specified here." When I try to solve the optimization problem I get a message reading "no value specified for..." in reference to the cells containing the "." consequently, it won't solve the problem. However, when I try to specify a default value to replace the ".", the problem churns and churns and doesn't solve. Is there any way I can set restrictions on the

问题 I have this as an input to my command line interface as parameters to the executable: -Parameter1=1234 -Parameter2=38518 -param3 "Test \"escaped\"" -param4 10 -param5 0 -param6 "TT" -param7 "Seven" -param8 "secret" "-SuperParam9=4857?--SuperParam10=123" What I want to is to get all of the parameters in a key-value / associative array with PHP like this: $result = [ 'Parameter1' => '1234', 'Parameter2' => '1234', 'param3' => 'Test \"escaped\"', 'param4' => '10', 'param5' => '0', 'param6' =>