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Difference between .on('click') vs .click()
...rom .click() in that it has the ability to create delegated event handlers by passing a selector parameter, whereas .click() does not. When .on() is called without a selector parameter, it behaves exactly the same as .click(). If you want event delegation, use .on().
...
Inline labels in Matplotlib
...) , below). This can be very fiddly, because I have to specify coordinates by hand, and, if I re-format the plot, I probably have to reposition the labels. Is there a way to automatically generate labels on curves in Matplotlib? Bonus points for being able to orient the text at an angle correspondin...
using data-* attribute with thymeleaf
...te: If you want more that one attribute, separate the different attributes by comma:
<div th:attr="data-id=${element.getId()},data-name=${element.getName()}">
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Java Generics (Wildcards)
...<? extends T> or <? super T>) places a restriction on the type by saying that it either has to extend a specific type (<? extends T> is known as an upper bound), or has to be an ancestor of a specific type (<? super T> is known as a lower bound).
The Java Tutorials have some...
LaTeX Optional Arguments
...rred to as #1 and #2 in the {<definition>}--nothing new so far.
But by adding a second optional argument to this \newcommand
(the [YYY]) the first argument (#1) of the newly defined
command \example is made optional with its default value being YYY.
Thus the usage of \example is either:
...
How do I define global variables in CoffeeScript?
...Node.js, instead you assign to the exports object which then gets returned by the require function.
Coffee-Script
After all that explanation, here's what you need to do:
root = exports ? this
root.foo = -> 'Hello World'
This will declare our function foo in the global namespace (whatever t...
What is the difference between active and passive FTP?
...can actually be a problem if, for example, the client machine is protected by firewalls and will not allow unauthorised session requests from external parties.
In passive mode, the client establishes both channels. We already know it establishes the command channel in active mode and it does the sa...
How do I apply a perspective transform to a UIView?
...ch-based rotation and scaling on a couple of CALayers, based on an example by Bill Dudney. The newest version of the program, at the very bottom of the page, implements this kind of perspective operation. The code should be reasonably simple to read.
The sublayerTransform you refer to in your res...
How to center align the cells of a UICollectionView?
...
I think you can achieve the single line look by implementing something like this:
- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section {
return UIEdgeInsetsM...
A migration to add unique constraint to a combination of columns
... the constraint. A uniqueness constraint on only some rows can be enforced by creating a partial index. So IMHO there's no need to drop to raw SQL when the outcome will be basically the same as using the add_index method. ;)
– Rafał Cieślak
Mar 23 '15 at 10:...