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Programmatically trigger “select file” dialog box
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Note that I used visibility: hidden, instead of display: none. You cannot call the click event on a non-displayed file input.
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Is there a way to access the “previous row” value in a SELECT statement?
...t the previous value given the current one (EG, you want to order alphabetically) then I don't know of a way to do that in standard SQL, but most SQL implementations will have extensions to do it.
Here is a way for SQL server that works if you can order rows such that each one is distinct:
selec...
How to check if running as root in a bash script
... by using the root username. Nothing guarantees that the user with ID 0 is called root. It's a very strong convention that is broadly followed but anybody could rename the superuser another name.
I think the best way when using bash is to use $EUID, from the man page:
EUID Expands to the effecti...
Android EditText delete(backspace) key event
...de is sendKeyEvent in the EditText's InputConnection class. This method is called when key events occur in an IME. But in order to override this, we need to implement a custom EditText which overrides the onCreateInputConnection method, wrapping the default InputConnection object in a proxy class! :...
Setting up foreign keys in phpMyAdmin?
...ching foreign key column will get deleted (resp. updated) as well. This is called a cascade delete (resp. update[2]).
RESTRICT
A value cannot be updated or deleted when a row exists in a foreign key table that references the value in the referenced table. Similarly, a row cannot be deleted as long...
How to change the background color of the options menu?
...itimate reasons why one may need to control the look of Options menus (typically to match a visual style for the rest of the app) so I won't dwell on that.
There is a Google Android bug posted about this: please add your support by starring this bug (note Google discourages "me too" comments: just ...
What is jQuery Unobtrusive Validation?
...y in this Pluralsight video in the section on " AJAX and JavaScript".
Basically, it is simply Javascript validation that doesn't pollute your source code with its own validation code. This is done by making use of data- attributes in HTML.
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PopupWindow - Dismiss when clicked outside
...ather use another name other than PopupWindow for your custom class, maybe call it MyPopupWindow instead of Popupwindow so that android doesn't get confused between your its standard android class and your custom class.
– Simon
Aug 8 '15 at 10:42
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How to differentiate single click event and double click event?
...624
// License: MIT
jQuery.fn.single_double_click = function(single_click_callback, double_click_callback, timeout) {
return this.each(function(){
var clicks = 0, self = this;
jQuery(this).click(function(event){
clicks++;
if (clicks == 1) {
setTimeout(function(){
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Mongod complains that there is no /data/db folder
...ho owns the directory, and which group that directory belongs to.
Both are called 'mongod' in this case.
If your '/data/db' directory doesn't have the permissions and ownership above, do this:
First check what user and group your mongo user has:
# grep mongo /etc/passwd
mongod:x:498:496:mongod:/...