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Explain ExtJS 4 event handling
...escribing DOM elements' event handling.
DOM node event handling
First of all you wouldn't want to work with DOM node directly. Instead you probably would want to utilize Ext.Element interface. For the purpose of assigning event handlers, Element.addListener and Element.on (these are equivalent) we...
Suppress warning CS1998: This async method lacks 'await'
...ave anything to await, and some might just throw. It's a bit annoying with all the warnings.
14 Answers
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How can I handle the warning of file_get_contents() function in PHP?
...the warning by putting an error control operator (i.e. @) in front of the call to file_get_contents():
$content = @file_get_contents($site);
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Java: Clear the console
...
There is no executable named cls.exe or cls.com in a standard Windows installation that could be invoked via Runtime.exec, as the well-known command cls is builtin to Windows’ command line interpreter.
When launching a new process via Runtime.exec, the standard output gets redirected to a pipe wh...
CSS customized scroll bar in div
...ng scrollbars: https://www.webkit.org/blog/363/styling-scrollbars/
Demo of all WebKit scroll bar styling
From Custom scrollbars in WebKit, relevant CSS:
/* pseudo elements */
::-webkit-scrollbar { }
::-webkit-scrollbar-button { }
::-webkit-scrollbar-track { }
::-webkit-...
List of ANSI color escape sequences
...cape sequences you're looking for are the Select Graphic Rendition subset. All of these have the form
\033[XXXm
where XXX is a series of semicolon-separated parameters.
To say, make text red, bold, and underlined (we'll discuss many other options below) in C you might write:
printf("\033[31;1;4mHel...
pycharm running way slow
...karound to remedy the problem based on the analysis of the provided data.
All the other "solutions" (like enabling Power Save mode and changing the highlighting level) will just hide the real problems that should be fixed.
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How do I query if a database schema exists
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This is old so I feel compelled to add: For SQL SERVER 2008+ These all work (for the select part), then use EXECUTE('CREATE SCHEMA <name>') to actually create it on negative results.
DECLARE @schemaName sysname = 'myfunschema';
-- shortest
If EXISTS (SELECT 1 WHERE SCHEMA_ID(@schemaNa...
iPhone Navigation Bar Title text color
...ear as the title in the navigation bar
UILabel *label = [[[UILabel alloc] initWithFrame:CGRectZero] autorelease];
label.backgroundColor = [UIColor clearColor];
label.font = [UIFont boldSystemFontOfSize:20.0];
label.shadowColor = [UIColor colorWithWhite:0.0 alpha:0.5];...
SQL Server: Difference between PARTITION BY and GROUP BY
I've been using GROUP BY for all types of aggregate queries over the years. Recently, I've been reverse-engineering some code that uses PARTITION BY to perform aggregations. In reading through all the documentation I can find about PARTITION BY , it sounds a lot like GROUP BY , maybe with a ...