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ASP.Net MVC: How to display a byte array image from model
...and the mechanics of the servers, intermediary content platforms and the clients that are requesting and processing the information. I don't want to go into extraordinary detail in a comment but I want to stress the need to truly understand the implications of using such a technique.
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Condition within JOIN or WHERE
... predicates in the WHERE clause and the INNER JOIN, so even INNER JOIN queries with WHERE clauses can have the predicates rearrranged by the optimizer so that they may already be excluded during the JOIN process.
I recommend you write the queries in the most readable way possible.
Sometimes this i...
How to get JavaScript caller function line number? How to get JavaScript caller source URL?
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This works for me in chrome/QtWebView
function getErrorObject(){
try { throw Error('') } catch(err) { return err; }
}
var err = getErrorObject();
var caller_line = err.stack.split("\n")[4];
var index = caller_line.indexOf("at ");
var clean = caller_line...
Best way to detect that HTML5 is not supported
...ecifications. This approach was also recommended in a blog post from the IE 9 team.
var canvasSupported = !!window.HTMLCanvasElement;
My recommendation is a variation of the latter (see Additional Notes), for several reasons:
Every known browser supporting canvas ― including IE 9 ― imple...
valueOf() vs. toString() in Javascript
... the operands, and then decides if addition or concatenation should be applied, based on the type of each primitive.
So, this is how you think it works
a + b:
pa = ToPrimitive(a)
if(pa is string)
return concat(pa, ToString(b))
else
return add(pa, ToNumber(b))
and this i...
HTML text input allow only numeric input
...ys, the caret position, different keyboard layouts, and all browsers since IE 9):
// Restricts input for the given textbox to the given inputFilter function.
function setInputFilter(textbox, inputFilter) {
["input", "keydown", "keyup", "mousedown", "mouseup", "select", "contextmenu", "drop"].forE...
Angular HttpPromise: difference between `success`/`error` methods and `then`'s arguments
... do yet another call etc.).
The .success() method is a streamlined, convenience method when you don't need to chain call nor work with the promise API (for example, in routing).
In short:
.then() - full power of the promise API but slightly more verbose
.success() - doesn't return a promise but ...
Finding the max value of an attribute in an array of objects
I'm looking for a really quick, clean and efficient way to get the max "y" value in the following JSON slice:
13 Answers
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How do I speed up the gwt compiler?
We're starting to make heavier use of GWT in our projects, and the performance of the GWT compiler is becoming increasingly annoying.
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Centering floating divs within another div
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@Darren: did you stop floating when you tried? You won't be able to accomplish what you want as long as you're floating /unless/ you set a fixed width on the container of the floats.
– Ken Browning
Aug 12 '09 at 23:44
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