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Laravel Schema onDelete set null
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327
If you want to set null on delete:
$table->...->onDelete('set null');
First make sur...
Read and write a String from text file
...to read and write a simple string. You can test it on a playground.
Swift 3.x - 5.x
let file = "file.txt" //this is the file. we will write to and read from it
let text = "some text" //just a text
if let dir = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first {
le...
Programmatically set height on LayoutParams as density-independent pixels
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273
You need to convert your dip value into pixels:
int height = (int) TypedValue.applyDimension(Ty...
How to detect Safari, Chrome, IE, Firefox and Opera browser?
...fox 1.0+
var isFirefox = typeof InstallTrigger !== 'undefined';
// Safari 3.0+ "[object HTMLElementConstructor]"
var isSafari = /constructor/i.test(window.HTMLElement) || (function (p) { return p.toString() === "[object SafariRemoteNotification]"; })(!window['safari'] || (typeof safari !== 'undefi...
java: Class.isInstance vs Class.isAssignableFrom
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3
this misses the case where the Foo is the same as clazz - in which case it returns true: Pauls top-voted answer below corrects this
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Error: Configuration with name 'default' not found in Android Studio
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answered Mar 30 '14 at 12:06
Ajay SAjay S
44.5k2020 gold badges8383 silver badges103103 bronze badges
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Is there a “not equal” operator in Python?
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636
Use !=. See comparison operators. For comparing object identities, you can use the keyword is a...
wpf: how to show tooltip when button disabled by command?
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3 Answers
3
Active
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Drop multiple tables in one shot in mysql
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136
Example:
Let's say table A has two children B and C. Then we can use the following syntax to d...