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How to change the opacity (alpha, transparency) of an element in a canvas element after it has been
...s far as I have concluded right now, this does not seem to affect image drawing.
//works with shapes but not with images
ctx.fillStyle = "rgba(255, 255, 255, 0.5)";
I have concluded that setting the globalCompositeOperation works with images.
//works with images
ctx.globalCompositeOperation = ...
Solutions for INSERT OR UPDATE on SQL Server
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@CashCow, the last wins, this is what INSERT or UPDATE is supposed to do: the first one inserts, the second updates the record. Adding a lock allow this to happen in a very short time-frame, preventing an error.
– Jean Vin...
Does Python have a ternary conditional operator?
...ays evaluates everything, whereas the if/else construct only evaluates the winning expression.
– SilverbackNet
Feb 4 '11 at 2:25
120
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Browser detection in JavaScript? [duplicate]
...& check(/rv:1\.9/);
var isBorderBox = isIE && !isStrict;
var isWindows = check(/windows|win32/);
var isMac = check(/macintosh|mac os x/);
var isAir = check(/adobeair/);
var isLinux = check(/linux/);
var isSecure = /^https/i.test(window.location.protocol);
var isIE7InIE8 = isIE7 &&...
How to change max_allowed_packet size
...k some would also want to know how to find the my.ini file on your PC. For windows users, I think the best way is as follows:
Win+R(shortcut for 'run'), type services.msc, Enter
You could find an entry like 'MySQL56', right click on it, select properties
You could see sth like "D:/Program Files/My...
How can I get the current network interface throughput statistics on Linux/UNIX? [closed]
...ning to parse tcpdump output again. Thank you iftop and wireshark, for allowing me to be this lazy.
– Parthian Shot
Aug 4 '14 at 20:21
1
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How to retrieve the LoaderException property?
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Just an FYI, if you're running a Win Service (like I am), MessageBox will not appear as UI elements are automatically blocked. Rest of implementation was helpful. Just saved to a log file instead. Thanks.
– Vippy
Sep 16...
Character Limit in HTML
...apt to every client's bad HTML implementation, it's an impossible fight to win. That's why it's far better to check it on the server side, with a PHP / Python / whatever script.
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How to initialize private static members in C++?
... one of our .cpp files? It will compile fine and we will have no way of knowing which one wins until we run the program.
Never put executed code into a header for the same reason that you never #include a .cpp file.
include guards (which I agree you should always use) protect you from something di...
Correct way to write line to file?
...ring instead of \n" would require newline="" otherwise you'd get \r\r\n on Windows. There is no reason to futz about with os.linesep at all.
– John Machin
May 28 '11 at 7:23
7
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