default-value Questions
5
I have created a table with name person and added a column 'phone_number' using liquibase changeset. But now I want to add a default value for it. but it did not work, so far I have tried this:
...
Griswold asked 13/4, 2016 at 3:59
9
Consider this example:
var Field = React.createClass({
render: function () {
// never renders new value...
return (
<div>
<input type="text" defaultValue={this.props.value || ''} /&g...
Unbar asked 9/6, 2015 at 9:15
7
Solved
I am having a very annoying issue with React and checkboxes. The application I am working with requires a list of checkboxes that represent settings that are persisted in the back-end. There is an ...
Dicta asked 24/8, 2016 at 9:54
11
Solved
Pretty straight forward question here, I think this should work but it doesn't. Why doesn't it?
CREATE TABLE INVOICE(
INVOICEDATE DATE NOT NULL DEFAULT CURRENT_DATE
)
Betweentimes asked 9/12, 2013 at 0:18
25
Solved
I want to change default text on button that is "Choose File" when we use input="file".
How can I do this? Also as you can see in image button is on left side of text. How can I put it on right ...
Wisp asked 28/2, 2011 at 5:58
4
Solved
I have Listpreferences in my app. They don't appear to be setting to their defaults right after installation - they appear to be null. I'm trying to figure out why my default preferences are not be...
Machismo asked 1/5, 2010 at 21:0
28
Solved
I have an issue using react-select. I use redux form and I've made my react-select component compatible with redux form. Here is the code:
const MySelect = props => (
<Select
{...props}
v...
Prana asked 19/4, 2017 at 12:24
3
Solved
Is "*" or the server's URI the default value for Access-Control-Allow-Origin header?
If the header is not set, does it mean that every origin has access to the resource?
Lamm asked 19/2, 2019 at 16:45
6
Solved
Is there a way to define a default value for an object in array to be initialized with?
In the same way that primitive types are initialized when declaring an array of them:
int[] myIntArray = ne...
Lolita asked 30/3, 2016 at 14:50
7
I have applied the below settings in VS Code to get 4 spaces indentation.
But always when I open a new file, it switches back to 2 in the right-bottom corner.
If I click in the right-bottom corner...
Hysterical asked 8/3, 2018 at 6:50
6
Solved
I have a dropdown button which works fine, but when I try to set a default value it will fail with the following error:
'package:flutter/src/material/dropdown.dart': Failed assertion: line 620 ...
Moment asked 10/9, 2019 at 11:12
2
I have trouble understanding what happens in the oracle database after this sql is executed:
CREATE TABLE EMPTYSTRING
(
COLUMNA VARCHAR2(1)
);
INSERT INTO EMPTYSTRING (COLUMNA) VALUES('X');
ALT...
Tarter asked 28/2, 2014 at 10:0
3
Solved
I am trying to write a VBA sub that allows optional parameters with default values. I tried the sample code from Microsoft Docs - Optional Parameters (Visual Basic) but it leads to the sub not show...
Reseau asked 8/5, 2020 at 7:24
10
Solved
Both of these generate an error saying they must be a compile-time constant:
void Foo(TimeSpan span = TimeSpan.FromSeconds(2.0))
void Foo(TimeSpan span = new TimeSpan(2000))
First of all, can so...
Epigrammatist asked 30/1, 2010 at 17:50
18
Is it possible to give a default value to a parameter of a function while we are passing the parameter by reference. in C++
For example, when I try to declare a function like:
virtual const ULONG...
Pomelo asked 29/6, 2009 at 18:5
7
Solved
For example, you might have function with a complicated signature and varargs:
fun complicated(easy: Boolean = false, hard: Boolean = true, vararg numbers: Int)
It would make sense that you shou...
Indestructible asked 14/8, 2016 at 9:54
19
is there "elegant" way to give specific property a default value ?
Maybe by DataAnnotations, something like :
[DefaultValue("true")]
public bool Active { get; set; }
Thank you.
Mecham asked 23/10, 2013 at 23:15
5
Solved
Let's say I have some Django model that is an abstract base class:
class Foo(models.Model):
value=models.IntegerField()
class Meta:
abstract = True
and it has two derived classes, where I'd ...
Hawthorne asked 25/10, 2011 at 4:35
10
Solved
If you try to create a TEXT column on a table, and give it a default value in MySQL, you get an error (on Windows at least). I cannot see any reason why a text column should not have a default valu...
Amoebocyte asked 12/8, 2010 at 10:56
4
I am using typeorm with Mongo database. I want to provide a default value for a column with boolean datatype.
My entity looks as following:
@ObjectIdColumn()
id: ObjectID;
@Column()
name: str...
Malave asked 1/3, 2019 at 10:49
4
I set the default file name is answer_XXXXXX.csv in OpenFileDialog. But it displays like this. The default name "answer_XXXXXX.csv" isn't displayed full.
Then I click on File name combo box. It di...
Phil asked 18/6, 2013 at 8:15
5
Solved
I'm looking for something like default value for Map.
m = new Map();
//m.setDefVal([]); -- how to write this line???
console.log(m[whatever]);
Now the result is Undefined but I want to get empty...
Scamper asked 13/7, 2018 at 6:45
4
Solved
I am trying to declare local variable like:
DECLARE @thresholdDate DATETIME = '2014-11-30'
And I am getting error:
Cannot assign a default value to a local variable.
As per documentation:
...
Oophorectomy asked 21/11, 2014 at 11:42
11
Solved
Based on my reference, primitive types have default values and Objects are null. I tested a piece of code.
public class Main {
public static void main(String[] args) {
int a;
System.out.println(...
Thessalonians asked 2/10, 2013 at 6:46
4
How to set default value for a field to other column in MySQL?
I have done it in Oracle with virtual field, but I do not know how to do it in MySQL.
This is my table:
CREATE TABLE TSM_TRANSACTION_T...
Cysteine asked 13/3, 2013 at 11:47
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