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How to count duplicate value in an array in javascript
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the extra if statement after the loop is unnecessary... just use for (var i = 0; i <= array_elements.length; i++) { or <= instead of <.
– EmmaGamma
Feb 9 '15 at 1:58
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Activity has leaked window that was originally added
...ct to the scene (shouldn't have happened but it did) but it didn't give an extra exception for it and the whole thing was masked by the "leaked window" exception instead.
– Neph
Sep 10 '18 at 12:47
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Django - How to rename a model field using South?
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Django 1.7 introduced Migrations so now you don't even need to install extra package to manage your migrations.
To rename your model you need to create empty migration first:
$ manage.py makemigrations <app_name> --empty
Then you need to edit your migration's code like this:
from djan...
Difference between margin and padding?
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Remember these 3 points:
The Margin is the extra space around the control.
The Padding is extra space inside the control.
The Padding of an outer control is the Margin of an inner control.
Demo Image:(where red box is desire control)
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“’” showing on page instead of “ ' ”
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This sometimes happens when a string is converted from Windows-1252 to UTF-8 twice.
We had this in a Zend/PHP/MySQL application where characters like that were appearing in the database, probably due to the MySQL connection not specifying the correct cha...
How to create a JavaScript callback for knowing when an image is loaded?
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.complete + callback
This is a standards compliant method without extra dependencies, and waits no longer than necessary:
var img = document.querySelector('img')
function loaded() {
alert('loaded')
}
if (img.complete) {
loaded()
} else {
img.addEventListener('load', loaded)
img.a...
Taking screenshot on Emulator from Android Studio
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would give extra bonus for screen capure with device frame :)
– Opiatefuchs
Jul 12 '17 at 19:58
add a comment
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NSDate beginning of day and end of day
...n)!
let specificDate = Date("2020-01-01")
extension Date {
init(_ dateString:String) {
let dateStringFormatter = DateFormatter()
dateStringFormatter.dateFormat = "yyyy-MM-dd"
dateStringFormatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") as Locale
let dat...
Quick easy way to migrate SQLite3 to MySQL? [closed]
...esn't use quotes inside the schema definition
MySQL uses single quotes for strings inside the INSERT INTO clauses
SQLite and MySQL have different ways of escaping strings inside INSERT INTO clauses
SQLite uses 't' and 'f' for booleans, MySQL uses 1 and 0 (a simple regex for this can fail when you ha...
Button in a column, getting the row from which it came on the Click event handler
...WPF Datagrid to a List of Objects returned from my DAL. I've also added an extra column which contains a button, the xaml is below.
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