parameter-passing

问题 I'm trying to write a MySQL script to import data into a table for my Linux server. Here is the script named update.sql : SET @query = CONCAT("LOAD DATA LOCAL INFILE '", @spaceName, "' INTO TABLE tmp FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n';"); PREPARE stmt FROM @query; EXECUTE stmt; DEALLOCATE PREPARE stmt; And also, I write a bash script named main.sh : mysql -h "localhost" -u "root" "-pmypassword" "mydb" -e "set @spaceName=\"$1\";source update.sql;" Then I execute ./main.sh France

问题 Currently I'm using something like: $('.myclass').click(function(){ var msg = $(this).attr('id'); alert(msg) }); And HTML: < a href="#" class="myclass" id="101">Link</a> If I need additional parameters how would I read them? Also is the current way I am using the proper way? Originally I was using hidden input fields so it was already a step up. :p 回答1: jQuery Events jQuery .click() $('.myclass').bind("click", { Param1: "", Param2: 2 }, function(event){ alert(event.data.Param2); }); 回答2: you

问题 Currently I'm using something like: $('.myclass').click(function(){ var msg = $(this).attr('id'); alert(msg) }); And HTML: < a href="#" class="myclass" id="101">Link</a> If I need additional parameters how would I read them? Also is the current way I am using the proper way? Originally I was using hidden input fields so it was already a step up. :p 回答1: jQuery Events jQuery .click() $('.myclass').bind("click", { Param1: "", Param2: 2 }, function(event){ alert(event.data.Param2); }); 回答2: you

问题 What is better to do? self.call(1, True, "hi") or self.call(1, True, "hi",) And what in the following cases: self.call( 1, True, "hi" ) or self.call( 1, True, "hi", ) ? Reasons for adding a trailing comma in data structures are familiar to me, but what about function calls? 回答1: I think there's no technical reason to avoid trailing commas in function calls, but some people probably do find them distracting. Some may stop and say: "Hmmm, I wonder if that's really supposed to be there?" I

问题 Hi i am using reflections to achieve something. I have been given class name, method name of that class and parameter values that needs to be passed to that method in a file(Take any file. Not a constraint). I have to call that method with the parameters. This methods do not return anything. There is a huge list of methods in this classes and parameter list of each varies. E.g: method1(String, String, int, boolean) method1(String, int, boolean) and likewise i have different permutations and

问题 I was learning passing by reference, and here is the test I did: #include <iostream> using namespace std; int i = 0; //If this is uncommented, compiler gives ambiguous definition error. //void paramCheck (string s) { // cout << ++i << ". Param is var.\n"; //} void paramCheck (const string& s) { cout << ++i << ". Param is const ref.\n"; } void paramCheck (string& s) { cout << ++i << ". Param is non-const ref.\n"; } void paramCheck (const string&& s) { cout << ++i << ". Param is const rvalue

问题 I was learning passing by reference, and here is the test I did: #include <iostream> using namespace std; int i = 0; //If this is uncommented, compiler gives ambiguous definition error. //void paramCheck (string s) { // cout << ++i << ". Param is var.\n"; //} void paramCheck (const string& s) { cout << ++i << ". Param is const ref.\n"; } void paramCheck (string& s) { cout << ++i << ". Param is non-const ref.\n"; } void paramCheck (const string&& s) { cout << ++i << ". Param is const rvalue

问题 I am doing a project in Struts2 where I need of setting a parameter in URL like user parameter in below link. I want this parameter to be passed when I click a form submit button and not any links separately. I know how to do this with <s:url> but that way I need to create a link instead of form submit. Can someone please help me with a code sample how to do this? I know there's a way to do it with HTML or Struts1 but how to do it with Struts2? If there is a way to do this in struts.xml ,

问题 I want to create a controller based JavaFX GUI consisting of multiple controllers. The task I can't accomplish is to pass parameters from one Scene to another AND back. Or in other words: The MainController loads SubController's fxml, passes an object to SubController, switches the scene. There shall not be two open windows. After it's work is done, the SubController shall then switch the scene back to the MainController and pass some object back. This is where I fail. This question is very

问题 I want to create a controller based JavaFX GUI consisting of multiple controllers. The task I can't accomplish is to pass parameters from one Scene to another AND back. Or in other words: The MainController loads SubController's fxml, passes an object to SubController, switches the scene. There shall not be two open windows. After it's work is done, the SubController shall then switch the scene back to the MainController and pass some object back. This is where I fail. This question is very