No jQuery used and is a very clean implementation: Reads from the maxlength attribute. Scales to any number of inputs inside of your container. Automatically finds the next input to focus. No jQuery. http://jsfiddle.net/4m5fg/5/ <div class=”container”> a: <input type=”text” maxlength=”5″ /> b: <input type=”text” maxlength=”5″ /> c: <input type=”text” maxlength=”5″ /> </div> .. var container … Read more
Yes, this is expected; the Counter() constructor uses Counter.update() which uses self.get() to load initial values rather than rely on __missing__. Moreover, the defaultdict __missing__ factory is handled entirely in C code, especially when using another type like int() that is itself implemented in C. The Counter source is pure Python and as such the … Read more
There’s actually a bit of hidden overhead in zip(df.A.values, df.B.values). The key here comes down to numpy arrays being stored in memory in a fundamentally different way than Python objects. A numpy array, such as np.arange(10), is essentially stored as a contiguous block of memory, and not as individual Python objects. Conversely, a Python list, … Read more
I ended up creating my own plugin. Here it is in case this helps anyone: (function($) { $.fn.countTo = function(options) { // merge the default plugin settings with the custom options options = $.extend({}, $.fn.countTo.defaults, options || {}); // how many times to update the value, and how much to increment the value on each … Read more
select name, @rownum := @rownum + 1 as row_number from your_table cross join (select @rownum := 0) r order by name This part: cross join (select @rownum := 0) r makes it possible to introduce a variable without the need of a seperate query. So the first query could also be broken down into two … Read more
Using [[]]*5000, you are creating 5000 reference to the same list in your outer list. So, if you modify any list, it will modify all of them. You can get different lists like this: a = [[] for _ in xrange(5000)]
for…in iterates over property names, not values, and does so in an unspecified order (yes, even after ES6). You shouldn’t use it to iterate over arrays. For them, there’s ES5’s forEach method that passes both the value and the index to the function you give it: var myArray = [123, 15, 187, 32]; myArray.forEach(function (value, … Read more
I cannot find any interface to access the real live value. [of the counter] Yeah. I don’t think there is one. Sorry. The only thing I can think of would be to go through every element (including its :before/:after pseudo-elements) before the element in the document, looking for counters and adding up how many there … Read more
What errors are you seeing in the browser? I can understand why your code doesn’t work if what you posted was incomplete, but without knowing that I can’t know for sure. You should probably clear the charNum div, or write something, if they are over the limit. function countChar(val) { var len = val.value.length; if … Read more
In Python 2.7 (or newer), you can use collections.Counter: import collections a = [1,1,1,1,2,2,2,2,3,3,4,5,5] counter=collections.Counter(a) print(counter) # Counter({1: 4, 2: 4, 3: 2, 5: 2, 4: 1}) print(counter.values()) # [4, 4, 2, 1, 2] print(counter.keys()) # [1, 2, 3, 4, 5] print(counter.most_common(3)) # [(1, 4), (2, 4), (3, 2)] print(dict(counter)) # {1: 4, 2: 4, … Read more