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What is the !! (not not) operator in JavaScript?
...h detects feature functionality (and in this case, platform compatibility) by way of dynamic typing (aka "duck typing"). We want to write a function that returns true if a user's browser supports the HTML5 <audio> element, but we don't want the function to throw an error if <audio> is un...
runOnUiThread in fragment
...fragment_head_screen, container, false);
dateTextView = root.findViewById(R.id.dateView);
hourTv = root.findViewById(R.id.hourView);
Thread thread = new Thread() {
@Override
public void run() {
try {
while (!isInterrupted()) {
...
center aligning a fixed position div
...cally translateX(-50%) considers the current width of the div and moves it by -50% of its width to the left side from the actual place.
– emil.c
Nov 14 '18 at 10:28
...
Laravel Check If Related Model Exists
...no one-fits-all method for all relations. Use query method instead as @tremby provided below:
$model->relation()->exists()
generic solution working on all the relation types (pre php 7.2):
if (count($model->relation))
{
// exists
}
This will work for every relation since dynamic p...
What is Full Text Search vs LIKE
...any information retrieval systems can enable support for leading wildcards by pre-compiling suffix trees in selected fields.
Other features typical of full-text search are
lexical analysis or tokenization—breaking a
block of unstructured text into
individual words, phrases, and
special tokens
...
z-index not working with fixed positioning
...ed according to appearance in the HTML)
Non-positioned elements (ordered by appearance in the HTML)
Positioned elements (and their children) with a z-index value of auto (ordered by appearance in the HTML)
Positioned elements (and their children) with positive z-index values (higher values a...
How to select bottom most rows?
... SELECT TOP 200
columns
FROM
My_Table
ORDER BY
a_column DESC
) SQ
ORDER BY
a_column ASC
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Why would $_FILES be empty when uploading files to PHP?
... is spelled correctly. Double check that multipart/form-data is surrounded by STRAIGHT QUOTES, not smart quotes pasted in from Word OR from a website blog (WordPress converts straight quotes to angle quotes!). If you have multiple forms on the page, make sure they both have this attribute. Type them...
how to fire event on file select
...ut type="file" id="file" name="file" />
and then:
document.getElementById('file').onchange = function() {
// fire the upload here
};
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Notifier 通知扩展：功能强大的Android通知管理工具，支持通知通道、意图、...
... Notifier 通知扩展：功能强大的Android通知管理工具，支持通知通道、意图、闹钟和多种通知类型
Notifier 通知扩展
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