parameter-passing

Event listener firing too early when parameters are passed

落爺英雄遲暮 提交于 2019-12-02 10:45:06
问题 I pass a number of parameter to a javascript function which builds a form for the user to fill in. Among these parameters are two more functions contained in a separate class which handle the saving or canceling of the form. The cancel function requires two parameters which it uses to determine which list of entities to build. The problem lies in the parameters. While in the form building function, if I attached the cancel function to the newly created cancel button without giving it any

PostgreSQL syntax error in parameterized query on “date $1”

给你一囗甜甜゛ 提交于 2019-12-02 10:44:11
问题 Trying to parameterize my SQL queries (using libpq function PQexecParams), I was stuck on a syntax error: SELECT date $1 The error is: ERROR: syntax error at or near "$1" 回答1: Prepared statements The explanation for this can be found in the chapter Constants of Other Types of the manual: The :: , CAST() , and function-call syntaxes can also be used to specify run-time type conversions of arbitrary expressions, as discussed in Section 4.2.9. To avoid syntactic ambiguity, the type 'string'

c function parameters order of evaluation

让人想犯罪 __ 提交于 2019-12-02 10:34:59
问题 I understand that there are no guarantees regarding the order which the parameters of a function will be called, but, isn't it guaranteed that if there's a function call as parameter, that function will be called first? I help students on the laboratory of an introductory subject on programming, and they were supposed to create a recursive factorial function which receives the n (for n!) and a pointer to an integer that will be used to count function calls and then they are supposed to print

r shiny error Error in as.vector(x, “character”) : cannot coerce type 'closure' to vector of type 'character'

二次信任 提交于 2019-12-02 10:15:53
While trying to pass an user entered input (empId) from Shiny UI into a sql query on shiny server.r not sure how to debug this error. Error in as.vector(x, "character") : cannot coerce type 'closure' to vector of type 'character' UI.r library(shiny) shinyUI(fluidPage( titlePanel("Employee Table (AdventureWorks)"), sidebarLayout( sidebarPanel((""), textInput("idnumb", "Employee ID number",""), submitButton("Ok")), mainPanel(tableOutput("emptitle"))))) Server.r shinyServer(function(input, output) { library(RODBC) library(sqldf) a1 = reactive({ (input$idnumb) }) acc_con1 = odbcConnect("AdvWrk",

Java pass by reference and compiler optimization

江枫思渺然 提交于 2019-12-02 10:13:35
In the function fermatFactorization() , a and b are being passed as reference parameters, since I am using the Long Class. However, in function testFermatFactorization() when I pass a and b to fermatFactorization() , the values of a and b do not get changed, and so testFermatFactorization() prints (0)(0) . I tested this by printing out a and b in fermatFactorization() , and I got the output that I expected. What am I overlooking? Could the compiler alter a and b in fermatFactorization() since they are only being assigned to?(doubtful) public static void fermatFactorization(Long n, Long a, Long

html form post to flex app

给你一囗甜甜゛ 提交于 2019-12-02 08:54:41
I've got a flex app that is basically completed it uses Zend AMF to connect/supply data. My app does have a login screen which seems to work fine. Now I'd like to add another login form on my site that would allows users to enter in username/password. When submitted form should pass the data to the flex app and bypass the application's login. The only way I know how to do this is by passing the users input in the url which is obviously not ideal. How can I post the form data to use as variables in flex? moropus There are two more methods I use. 1) Pass parameters to your swf via html embed and

Function for applying to a user with a various number of data fields

房东的猫 提交于 2019-12-02 08:43:07
The question was born when I was practicing an Observer topic in a tutorial I am trying to apply the function to the user but cannot use user's data fields like name, surname. Let's say that the user may have various number of data fields so we must use & args argument. My code that does not work: (ns observer.core) (def user {:name "Alan" :surname "Smith" :alias "Mike"}) (def user2 {:name "Jane" :surname "Smith"}) (apply (fn [& args] (println (str "I am " (:name args) " " (:surname args) "."))) user) (apply (fn [& args] (println (str "My sister is " (:name args) " " (:surname args) ".")))

Python function is changing the value of passed parameter

家住魔仙堡 提交于 2019-12-02 08:32:40
Here's an example of where I started mylist = [["1", "apple"], ["2", "banana"], ["3", "carrot"]] def testfun(passedvariable): for row in passedvariable: row.append("Something else") return "Other answer" otheranswer = testfun(mylist) print mylist I'd expected mylist not to have changed. I then tried this to remove that temporary column, but that didn't work: mylist = [["1", "apple"], ["2", "banana"], ["3", "carrot"]] def testfun(passedvariable): for row in passedvariable: row.append("Something else") # I'm now finished with the "Something else" column, so remove it for row in passedvariable:

How do you pass data/parameters to another activity in Android

一个人想着一个人 提交于 2019-12-02 08:32:00
问题 How to pass data/parameter values from one activity to another in android? I have used loginname=txtloginname.getText().toString(); password=txtpassword.getText().toString(); Bundle bundle = new Bundle(); bundle.putString("loginname", loginname); bundle.putString("password", password); Intent newIntent=new Intent(); newIntent.putExtras(bundle); setResult(RESULT_OK,newIntent); finish(); But I can only get loginname value How to put both login and password key and value? 回答1: You can just say

T-SQL - Using AND condition only if a value from a list is present

笑着哭i 提交于 2019-12-02 08:18:39
I want to add an AND condition in my query after the WHERE clause only if I find (a) value(s) from a list of predefined values, otherwise the condition should not be added. The condition I want to add here is "AND Table2.fieldvalue = importantvalue" only when a parameter value is present in a list of (1001, 1002, 1003, 1004, 1005, 1006, 1007) Also the parameter that comes in is a STRING with INT values comma separated but I have a user defined function to split and cast it into INT SELECT field1,field2,field3.... from Table1 join Table2 ON Table1.somefield = Table2.somefield WHERE Table1