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What is the best way to test for an empty string in Go?
... one that makes the code clear.
If I'm about to look at element x I typically write
len(s) > x, even for x == 0, but if I care about
"is it this specific string" I tend to write s == "".
It's reasonable to assume that a mature compiler will compile
len(s) == 0 and s == "" into the ...
nginx: send all requests to a single html page
Using nginx, I want to preserve the url, but actually load the same page no matter what. I will use the url with History.getState() to route the requests in my javascript app. It seems like it should be a simple thing to do?
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Why can I add named properties to an array as if it were an object?
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Virtually everything in javascript is an object, so you can "abuse" an Array object by setting arbitrary properties on it. This should be considered harmful though. Arrays are for numerically indexed data - for non-numeric keys, u...
What is the difference between bottom-up and top-down?
...-up approach (to dynamic programming) consists in first looking at the "smaller" subproblems, and then solve the larger subproblems using the solution to the smaller problems.
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Clearing a string buffer/builder after loop
...only benefit of creating the SB outside is not losing the internal (potentially long) char[] of it. If in the first iterator it grew up enough, the second loop will not need to resize any char[]. But for getting the advantage the "clear method" will have to preserve the size of the internal array. s...
Fluid width with equally spaced DIVs
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See: http://jsfiddle.net/thirtydot/EDp8R/
This works in IE6+ and all modern browsers!
I've halved your requested dimensions just to make it easier to work with.
text-align: justify combined with .stretch is what's handling the positioning.
display:inline-block; *display:inline; zoom:1 fixe...
Do you use NULL or 0 (zero) for pointers in C++?
...ded. That's less common these days.
If you have to name the null pointer, call it nullptr; that's what it's called in C++11. Then, nullptr will be a keyword.
That said, don't sweat the small stuff.
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The type or namespace name does not exist in the namespace 'System.Web.Mvc'
...Copy Local property to True or False
In Solution Explorer, click the Show All Files button to display the References node.
Open the References node for the project.
Right-click a reference in the References list, and click Properties.
The properties associated with that reference appear in a list...
Circle-Rectangle collision detection (intersection)
... the circle.
Note that this does not require the rectangle to be axis-parallel.
(One way to see this: if none of the edges has a point in the circle (if all the edges are completely "outside" the circle), then the only way the circle can still intersect the polygon is if it lies completely ins...
SQL query for finding records where count > 1
... a user ID, an account number, a ZIP code and a date. I would like to find all records for all users that have more than one payment per day with the same account number.
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