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How does Hadoop process records split across block boundaries?
According to the Hadoop - The Definitive Guide
6 Answers
6
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CSS center text (horizontally and vertically) inside a div block
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If it is one line of text and/or image, then it is easy to do. Just use:
text-align: center;
vertical-align: middle;
line-height: 90px; /* The same as your div height */
That's it. If it can be multiple lines, then it i...
Alternatives to dispatch_get_current_queue() for completion blocks in iOS 6?
...appealing, but ultimately not a great idea. That queue could be a low priority queue, the main queue, or some other queue with odd properties.
My favorite approach to this is to say "the completion block runs on an implementation defined queue with these properties: x, y, z", and let the block disp...
Editing dictionary values in a foreach loop
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Setting a value in a dictionary updates its internal "version number" - which invalidates the iterator, and any iterator associated with the keys or values collection.
I do see your point, but at the same time it would be odd if the values collection could change ...
HTML5: Slider with two inputs possible?
Is it possible to make a HTML5 slider with two input values, for example to select a price range? If so, how can it be done?
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Comparing date part only without comparing time in JavaScript
What is wrong with the code below?
22 Answers
22
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Insert line break inside placeholder attribute of a textarea?
...e', 'This is a line \nthis should be a new line');
Then you could remove it on focus and apply it back (if empty) on blur. Something like this
var placeholder = 'This is a line \nthis should be a new line';
$('textarea').attr('value', placeholder);
$('textarea').focus(function(){
if($(this)...
jQuery - add additional parameters on submit (NOT ajax)
Using jQuery's 'submit' - is there a way to pass additional parameters to a form? I am NOT looking to do this with Ajax - this is normal, refresh-typical form submission.
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MongoDB relationships: embed or reference?
...m a relational database background. I want to design a question structure with some comments, but I don't know which relationship to use for comments: embed or reference ?
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Easiest way to convert int to string in C++
... each numeric type) and std::to_string, the counterparts of the C atoi and itoa but expressed in term of std::string.
#include <string>
std::string s = std::to_string(42);
is therefore the shortest way I can think of. You can even omit naming the type, using the auto keyword:
auto s = st...