default-value

问题 I want to set a 'default' rewrite rule to catch anything that didn't match the previous rewrite entries. I've tried this: RewriteRule ^(.*)/?$ index.php?url=$1 [L] But the output returned is: url = index.php Ideally what I want is to attach all the GET values to 'url' so they will be saved to my web log. Anyone have any suggestions how to solve this? 回答1: Omit needless parentheses in regular expressions whenever you can: RewriteRule .* index.php?url=$0 [L] If you want to exclude "index.php":

问题 I thought this ought to be simple to find, yet after some searching I found this might be nice to define clearly. In my XSD I've defined an enum, derived from string. In a complex type I've defined and attribute that refers to this enum, with a default value. In my XSL I wish to display the default value of this attribute for elements whose attribute is not explicitly set. The XSD: <xs:complexType name="foo"> <xs:attribute name="bar" type="responsecodes:barType" default="default"/> </xs

问题 I know I can set default values either in the datamodel, or in the -awakeFromInsert method of the entity class. For example, to make a "date" property default to the current date: - (void) awakeFromInsert { NSDate *now = [NSDate date]; self.date = now; } How though can I make an "idNumber" property default to one greater than the previous object's idNumber? Thanks, Oli EDIT: Relevant code for my attempt (now corrected) - (void) awakeFromInsert { self.idNumber = [NSNumber numberWithInt:[self

问题 I have a program that I use to enter values into a database using a gridview. The gridview is populated with an 'empty' result from a DataSet that queries that database from the table I want. This fills the grid with the proper columns that I want (ie. a grid with an empty row from a certain table in a db). When you fill in the columns, I take the data and manually update the db. Basic example of how I use the gridview: this.fullUutDataTableAdapter.Fill(this.dalsaUutDataSet.ResultsFullUut);

问题 Here's my model's property: [Required(ErrorMessage = "Debe escribir su fecha de nacimiento")] [Display(Name = "Fecha de Nacimiento")] [DataType(DataType.Date)] public DateTime DateOfBirth { get; set; } In my AccountController, I create a new object of this model and pass it to the View: <div class="editor-label"> @Html.LabelFor(model => model.DateOfBirth) </div> <div class="editor-field"> @Html.EditorFor(model => model.DateOfBirth) @Html.ValidationMessageFor(model => model.DateOfBirth) </div>

问题 This question already has answers here : What do the following phrases mean in C++: zero-, default- and value-initialization? (2 answers) Closed 2 years ago . Why those two scenarios (the initialization of A and of C ) produce different default initialization results in C++ 14? I can't understand the result based on the default initialization rules in cppreference.com struct A { int m; }; struct C { C() : m(){}; int m; }; int main() { A *a, *d; A b; A c{}; a=new A(); d=new A; cout<<a->m<<endl

问题 This question already has answers here : Good way to encapsulate Integer.parseInt() (23 answers) Closed 2 years ago . I need to parse a string user id into integer for that I used Integer.parseInt(String s) but it returns null/nil, if there string has/holds non-decimal/integer value and in that case, I need to assign default integer value as 0 . I tried this but it (? 0) seems not working and I don't know whether it is correct syntax or not. String userid = "user001"; int int_userid = Integer

问题 I am a bit rusty on default parameters, and I am wondering how can I use a default value for a parameter if it goes before parameters without defaults? In the example from Redux.js below, when will the default value {} for the state parameter be useful? (since you can't default the next parameter)? const todo = (state = {}, action) => { switch (action.type) { //... case 'TOGGLE_TODO': if (state.id !== action.id) { return state } return Object.assign({}, state, { completed: !state.completed })

问题 I've bound the Height and Width of my window. Now, the window is so tiny in Visual Studio I can't work on it anymore. Setting default values to Height and Width would solve my problem. Is it possible in Binding ? <Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" x:Class="Sth.MainWindow

问题 I haven't been able to figure this out. It's easy to create two ctors but I wanted to learn if there's an easy way to do this. How can one pass a std::map as the default parameter to a ctor, e.g. Foo::Foo( int arg1, int arg2, const std::map<std::string, std::string> = VAL) I've tried 0 , null , and NULL as VAL , none of the work because they are all of type int, g++ complains. What is the correct default to use here? Or is this kind of thing not a good idea? 回答1: The correct expression for