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问题 I have the following schema: const profileSchema = new Schema({ created: { type: Date, default: Date.now }, readonly: { type: Boolean, default: false } }); const Profile = mongoose.model('profile',profileSchema); However I have found that if I query for "date", the date is set on documents, but if I query for "readonly" it is NOT set to false, but will return false on the document. For example: Profile.find({readonly: false}) Will return no documents. However, if I do: Profile.find({}) I will

问题 I have a PetaPoco class which defines a database table. It looks like this: namespace MyProject.Pocos { [TableName("AdminNotification")] [PrimaryKey("id", autoIncrement = true)] [ExplicitColumns] public class AdminNotification { [Column("id")] [PrimaryKeyColumn(AutoIncrement = true)] public int id { get; set; } [Column("dateTime")] public DateTime dateTime { get; set; } [Column("adminNotificationTypeId")] public int adminNotificationTypeId { get; set; } } } It works great except for one thing

问题 If you create a local repository by: git init Then how to set a default remote for git push so if you create a new branch and want to git push its commits you don't need to specify the remote destination? Take into account that the local repository is not cloned form a remote and just initialized so it does not have any commits to be pushed nor branches. so far I only managed to set the remote for the master because it is the default name for the first branch but this does not solve the

问题 i'm facing an issue with defaults values of tables. for example i have this model: class model1(models.Model): field1 = models.CharField(max_length=50, default='My Default Value 1',db_column='field1') field2 = models.CharField(max_length=10) class Meta: db_table = 'model1' and the postgresql table is generated without the default: mydb=# \d model1 Table "public.model1" Column | Type | Modifiers --------+-----------------------+----------------------------------------------------- id | integer

问题 I have a ZF1.12 project with this structure: |Project |-Application |-configs |-application.ini |-modules |-default |-configs |-controllers |-models |-views |-Bootstrap.php |-api |-configs |-controllers |-models |-views |-Bootstrap.php |-Bootstrap.php |-Library |-Public module configuration in application.ini resources.modulesetup[] = resources.frontController.moduleDirectory = APPLICATION_PATH "/modules" resources.frontController.defaultControllerName = "index" resources.frontController

问题 What is the default access of constructor in c++ and why ? public, private or protected ? And how do I check it through the code ? 回答1: If you do not declare a constructor yourself, the compiler will always generate a public trivial one for you. They will also implicitly create a public copy constuctor and copy assignment operator. From c++ standard 12.1.5: If there is no user-declared constructor for class X, a constructor having no parameters is implicitly declared as defaulted. An

问题 I have a two-dimensional array created like this: array = Array.new(10){Array.new(10)} How can I assign default values for each cell on initialization? I know I can do it with two nested each loops but I wondered if there is another way? 回答1: Just supply a second argument with the value: array = Array.new(10) { Array.new(10, 4) } Here, the default value is 4 and thus, a 10*10 2D array is created with default value of 4 . 回答2: Two-dimensional array To make your two-dimensional array, you can

问题 In bash shell, if you hit up or down arrows, the shell will show you your previous or next command that you entered, and you can edit those commands to be new shell commands. In perl6, if you do my $name = prompt("Enter name: "); it will print "Enter name: " and then ask for input; is there a way to have perl6 give you a default value and then you just edit the default to be the new value. E.g.: my $name = prompt("Your name:", "John Doe"); and it prints Your name: John Doe where the John Doe

问题 I want to add a new column to a table in MySQL database that should get the value of another column in the same table. Is this possible? If so, how do you do it? 回答1: Starting with MySQL 5.0.2 you can write a stored procedure linked to a TRIGGER which can examine the new column each time a row is inserted, and automatically copy the other column's value into the new column if no value was supplied for the new column. 回答2: As of 20101212 mysql does not support defaulting 2 timestamp columns,

问题 Someone asked this question elsewhere and was told there was a 'hint' here, but I'm quite new to MATLAB and don't see how to use that hint. I have a file cmap.mat . I load it and update the colormap as follows: load cmap.mat; colormap(cmap); But it only works for the current figure. I'd like all figures to use this colormap. 回答1: To set a default property that all figures will use, you have to set that default value on the root object. Here's some better documentation explaining how to do it.