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What exactly is Heroku?
...arted learning Ruby on rails and I was wondering what Heroku really is? I know that its a cloud that helps us to avoid using servers? When do we actually use it?
...
Vertical (rotated) text in HTML table
... the rule set to drop legacy Internet Explorer filter and rely more in the now standard transform property:
.box_rotate {
-webkit-transform: rotate(7.5deg); /* Chrome, Opera 15+, Safari 3.1+ */
-ms-transform: rotate(7.5deg); /* IE 9 */
transform: rotate(7.5deg); /* Firef...
What is the difference between min SDK version/target SDK version vs. compile SDK version?
...between "min sdk version/target sdk version" and "compile sdk version"? I know what min and target sdk means, but what does compile sdk version mean?
...
Compare two data.frames to find the rows in data.frame 1 that are not present in data.frame 2
...;- data.frame(a = c(1:3, 1), b = c(letters[1:3], "c")). Leave a1 the same. Now try the comparison. It's not clear to me even in reading the options what the proper way is to list only common elements.
– Hendy
Aug 8 '13 at 2:59
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Is it possible to set a number to NaN or infinity?
... arange(3,dtype=float)
a[0] = np.nan
a[1] = np.inf
a[2] = -np.inf
a # is now [nan,inf,-inf]
np.isnan(a[0]) # True
np.isinf(a[1]) # True
np.isinf(a[2]) # True
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How do you represent a graph in Haskell?
...ated before the other exists. Because Haskell is lazy you can use a trick known as Tying the Knot to get around this, but that makes my brain hurt (because I haven't done much of it yet). I've done more of my substantial programming in Mercury than Haskell so far, and Mercury is strict so knot-tying...
Why is 1/1/1970 the “epoch time”?
...och date went through a couple of changes before stabilizing on what it is now.
But it does not say why exactly 1/1/1970 was chosen in the end.
Notable excerpts from the Wikipedia page:
The first edition Unix Programmer's Manual dated November 3, 1971 defines the Unix time as "the time since 00:00:...
How to pass arguments and redirect stdin from a file to program run in gdb?
...; <(in) 1> >(out) 2> >(two) 3> >(three)
That's it. Now it's an absolute no-brainer to debug with gdb. Except for a few details or more:
gdb does not quit automatically and hence keeps the IO redirection open until you exit gdb. But I call this a feature.
You cannot easily...
What is the advantage of using Restangular over ngResource?
...t Restangular can also handle all of your URLs, so that you don't have to know anything about them.
Suppose that you have something like this for cars : /users/123/cars/456
In $resource, You'd have to construct that URL manually and you'd also have to construct the $resource object for this manual...
What is the difference between Class and Klass in ruby?
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Wow, beautiful. Completely understand now. Thanks Chris! :)
– thenengah
Nov 28 '10 at 22:18
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