You can use these methods to get an empty guid. The result will be a guid with all it’s digits being 0’s – “00000000-0000-0000-0000-000000000000“. new Guid() default(Guid) Guid.Empty As Use Keim points out in the comments default is short for default(Guid)
I guess you need something like this: const MySelect = props => ( <Select {…props} value = { props.options.filter(option => option.label === ‘Some label’) } onChange = {value => props.input.onChange(value)} onBlur={() => props.input.onBlur(props.input.value)} options={props.options} placeholder={props.placeholder} /> ); #EDIT 1 : In the new version const MySelect = props => ( <Select {…props} options={props.options} onChange = … Read more
You can use application/octet-stream for unknown types. RFC 2046 states in section 4.5.1: The “octet-stream” subtype is used to indicate that a body contains arbitrary binary data.
If you want a real database default value, use columnDefinition: @Column(name = “myColumn”, nullable = false, columnDefinition = “int default 100”) Notice that the string in columnDefinition is database dependent. Also if you choose this option, you have to use dynamic-insert, so Hibernate doesn’t include columns with null values on insert. Otherwise talking about default … Read more
NO,but there are some other options to implement default value. There are some good blog posts on the subject, but here are some specific examples. Option 1: The caller chooses to use default values // Both parameters are optional, use empty string for default value func Concat1(a string, b int) string { if a == … Read more
Windows MySQL v5 throws an error but Linux and other versions only raise a warning. This needs to be fixed. WTF? Also see an attempt to fix this as bug #19498 in the MySQL Bugtracker: Bryce Nesbitt on April 4 2008 4:36pm: On MS Windows the “no DEFAULT” rule is an error, while on other … Read more
Why is the default value of the string type null instead of an empty string? Because string is a reference type and the default value for all reference types is null. It’s quite annoying to test all my strings for null before I can safely apply methods like ToUpper(), StartWith() etc… That is consistent with … Read more
One possible idea is to write separate constructor function //Something is the structure we work with type Something struct { Text string DefaultText string } // NewSomething create new instance of Something func NewSomething(text string) Something { something := Something{} something.Text = text something.DefaultText = “default text” return something }
You can do it by manually edit code first migration: public override void Up() { AddColumn(“dbo.Events”, “Active”, c => c.Boolean(nullable: false, defaultValue: true)); }
Enumerable.Repeat(true, 1000000).ToArray();