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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
...veRecord::Migration[5.2]
def change
create_table :users do |t|
t.string :name, null: false # Notice here, NOT NULL definition
t.string :email, null: false
t.string :password, null: false
t.integer :created_by
t.integer :updated_by
t.datetime :created_at
t.date...
Parse XML using JavaScript [duplicate]
...XML found through using GeoNames' FindNearestAddress.
If your XML is in a string variable called txt and looks like this:
<address>
<street>Roble Ave</street>
<mtfcc>S1400</mtfcc>
<streetNumber>649</streetNumber>
<lat>37.45127</lat>
&...
How to parameterize @Scheduled(fixedDelay) with Spring 3.0 expression language?
...ject" method="readLog"
fixed-rate="#{YourConfigurationBean.stringValue}"/>
</task:scheduled-tasks>
... or if the cast from String to Long didn't work, something like this would:
<task:scheduled-tasks scheduler="myScheduler">
<task:scheduled ref="someObject" m...
405 method not allowed Web API
...b.Mvc; // Wrong namespace for HttpGet attribute !!!!!!!!!
[HttpGet]
public string Blah()
{
return "blah";
}
SHOULD BE
using System.Web.Http; // Correct namespace for HttpGet attribute !!!!!!!!!
[HttpGet]
public string Blah()
{
return "blah";
}
...
How to correctly save instance state of Fragments in back stack?
... To help save time for others, App.VSTUP and App.STAV are both string tags that represent the objects they are trying to obtain. Example: savedState = savedInstanceState.getBundle(savedGamePlayString); or savedState.getDouble("averageTime")
– Tanner Hallman
...
What do we mean by Byte array? [closed]
... 16-bit unsigned int from 0..65535), international character sets, textual strings ("hello"), or part/all of a compiled computer programs.
The crucial thing about a byte array is that it gives indexed (fast), precise, raw access to each 8-bit value being stored in that part of memory, and you can o...
Make a number a percentage
...
The best solution, where en is the English locale:
fraction.toLocaleString("en", {style: "percent"})
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Why does Assert.AreEqual(T obj1, Tobj2) fail with identical byte arrays
...e[0];
byte[] array2 = new byte[0];
Assert.AreEqual(System.Convert.ToBase64String(array1),
System.Convert.ToBase64String(array2));
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Difference between Xcode version (CFBundleShortVersionString) and build (CFBundleVersion)
...nt "Information Property List Key Reference" says that CFBundleShortVersionString represents a release version, whereas CFBundleVersion represents any build, released or not. Also, CFBundleShortVersionString can be localized, though I don't know why you'd want to, since they say it is supposed to b...
How do you specify that a class property is an integer?
...ype, you'll get sensible intelliSense.
Examples
var myInt: number;
var myString: string;
myInt. // toExponential, toFixed, toPrecision, toString
myString. // charAt, charCodeAt, concat, indexOf, lastIndexOf, length and many more...
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