parameters

问题 Assume that the command alpha produces this output: a b c d If I run the command beta $(alpha) then beta will be executed with four parameters, "a" , "b" , "c" and "d" . But if I run the command beta "$(alpha)" then beta will be executed with one parameter, "a b c d" . What should I write in order to execute beta with two parameters, "a b c" and "d" . That is, how do I force $(alpha) to return one parameter per output line from alpha ? 回答1: Similar to anubhava's answer, if you are using bash

问题 I would like to know, following RESTful best practices in which ways should I define an url like the following: /people?q="email=aa@aa.com||phone=11111" The point would be to search for a person either by their email address or phone depending on what they've inserted on a search box. I've been reading a few guides on best practices in using RESTful services but none seem to talk about this situation. 回答1: REST means you follow standards by building the (uniform) application interface.

问题 I'm trying to write in file some value taken from an array. But I'm having some error ''Can't use an undefined variables as a symbol reference at... line 81: foreach $k (sort keys %{$value2}){ print $value4 $k." = ".%{$value2{$k}}. $value3; sub printit{ $value1 = $_[0];#"ipadress" is a string $value2 = $_[1];#%hash2 $value3 = $_[3];#"paquet" is a string $value4 = $_[4];#SOURCE is the file name foreach $k (sort keys %{$value2}){ print $value4 $k." = ".%{$value2{$k}}. $value3; if (%{$value2{$k}

问题 I'm using scikit-learn's GridSearchCV to iterate over a parameter space to tune a model. Specifically, I'm using it to test different hyperparameters in a neural network. The grid is as follows: params = {'num_hidden_layers': [0,1,2], 'hidden_layer_size': [64,128,256], 'activation': ['sigmoid', 'relu', 'tanh']} The problem is that I end up running redundant models when hidden num_hidden_layers is set to 0 . It will run a model with 0 hidden layers and 64 units, another with 128 units, and

问题 I have a JSON string which includes a function I need to call. My JSON looks like this: { "type":"listview", // the function I would like to call "content":"dynoData.getRetailers()", "custom_classes":["","nMT pickList","",""], "lib":"static_listview.html", "tmp":"tmp_listview_inset", "lang":"locale_search", ... I'm using this to assemble a jQuery Mobile listview on the client. To get the dynamic data, I need to call dynoData.getRetailers() . However I'm struggling to make the call :-) This is

问题 My application is asp.net with vb. In my page I have a textbox for passing date. If I didn't enter date and on clicking submit, I have to pass null value to the stored procedure. I tried following codes such as DBNull.Value and DateTime.MinValue . In that case instead of null, "#12:00:00#" is passing. I have to pass Null. 回答1: Just assign the parameter the value DBNull.Value [EDIT] If you are using SqlParameter (thanks Jon) then you can set it like this if it gives any error parameter.Value =

问题 I try to get the path to my application at runtime. I found some old sources from C and converted it accordingly to the functions parameter type definition: var path = [Int8] (count:1024, repeatedValue: 0) var bufsize : UInt32 = 1024 if _NSGetExecutablePath(&path, &bufsize) == 0 { println("executable path is \(path)") } It runs, but I need an Int8 array, not a string. So I have to search for the end of the character chain and convert it back to a string. What is the correct way to use this

问题 If I have the following method in Ruby: def foo(arg1, arg2 = "bar") puts arg1 puts arg2 end Is there a way of determining if a user passed a value in for arg2 within the method? Obviously I could just add if arg2 == "bar" to the method, but this doesn't catch the case where the user manually passed in "bar" herself. Of course, I could set the default to be something that no user would ever pass in, but then that gets pretty ugly pretty quickly. Is there anything elegant out there? 回答1: I am

问题 With Laravel 5 I'm not able to setup get route parameters. My route is setup like this: Route::get('test', 'TestController@test'); And my TestController looks like this: public function test(Request $request) { var_dump($request->input('foo')); } When I browse to that route with a parameter /test?foo=bar the result is NULL. Can anybody tell me what I'm doing wrong? The Input::get('foo') syntax doesn't work either (and is not even mentioned in the documentation for L5). Update: I'm using

问题 is it possible to pass id through an link href in Laravel and display that page like /projects/display/2. I have this link: <td><a href="{{ url('projects/display', $projects->id) }}" class="btn btn-info">View</a></td> It displays the id when hovering over the link as /projects/display/2. But whenever i click on the link i get an error message of: Sorry, the page you are looking for could not be found. I have a view setup called projects/display, plus routes and controller. routes: <?php Route