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How to find the size of an array in postgresql
...ing PostgreSQL 9.4 or higher, you can use cardinality:
SELECT cardinality(id) FROM example;
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How to append to New Line in Node.js
...cessInput ( text )
{
fs.open('H://log.txt', 'a', 666, function( e, id ) {
fs.write( id, text + os.EOL, null, 'utf8', function(){
fs.close(id, function(){
console.log('file is updated');
});
});
});
}
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Git undo local branch delete
...
Deleted branch branch_name(was e562d13)
where e562d13 is a unique ID (a.k.a. the "SHA" or "hash"), with this you can restore the deleted branch.
To restore the branch, use:
git checkout -b <branch_name> <sha>
for example:
git checkout -b branch_name e562d13
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Jquery to change form action
...
Try this:
$('#button1').click(function(){
$('#formId').attr('action', 'page1');
});
$('#button2').click(function(){
$('#formId').attr('action', 'page2');
});
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What's “requestCode” used for on PendingIntent?
...ance later on (for cancelling, etc).
Yes, my guess is the alarms will override each other. I would keep the request codes unique.
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Why not use HTTPS for everything?
... site, and protect the user entirely. It would prevent problems such as deciding what has to be secured because everything would be, and it's not really an inconvenience to the user.
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How to hide a in a menu with CSS?
I've realized that Chrome, it seems, will not allow me to hide <option> in a <select> . Firefox will.
13 Ans...
Can angularjs routes have optional parameter values?
...lar has support for this now.
From the latest (v1.2.0) docs for $routeProvider.when(path, route):
path can contain optional named groups with a question mark (:name?)
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PostgreSQL create table if not exists
...to work around it:
CREATE OR REPLACE FUNCTION create_mytable()
RETURNS void
LANGUAGE plpgsql AS
$func$
BEGIN
IF EXISTS (SELECT FROM pg_catalog.pg_tables
WHERE schemaname = 'myschema'
AND tablename = 'mytable') THEN
RAISE NOTICE 'Table myschema.mytable a...
Twitter Bootstrap Form File Element Upload Button
...L
<label class="btn btn-default">
Browse <input type="file" hidden>
</label>
This works in all modern browsers, including IE9+. If you need support for old IE as well, please use the legacy approach shown below.
This techniques relies on the HTML5 hidden attribute. Bootstra...