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Common programming mistakes for Clojure developers to avoid [closed]
...e to worry about the concrete implementation of a Clojure map, you should know that functions which grow a map - like assoc or conj - can take a PersistentArrayMap and return a PersistentHashMap, which performs faster for larger maps.
Using a function as the recursion point rather than a loop to ...
how to draw smooth curve through N points using javascript HTML5 canvas?
...ation.) In other words the two disjointed curves have much more in common now.
This solution was extracted out of the book "Foundation ActionScript 3.0 Animation: Making things move". p.95 - rendering techniques: creating multiple curves.
Note: this solution does not actually draw through each o...
Center image in div horizontally [duplicate]
...
Every solution posted here assumes that you know the dimensions of your img, which is not a common scenario. Also, planting the dimensions into the solution is painful.
Simply set:
/* for the img inside your div */
display: block;
margin-left: auto;
margin-right: auto...
What is a reasonable code coverage % for unit tests (and why)? [closed]
...The first programmer is new and just getting started with testing.
Right now he has a lot of code and no
tests. He has a long way to go;
focusing on code coverage at this time
would be depressing and quite useless.
He’s better off just getting used to
writing and running some tests. He...
What are the nuances of scope prototypal / prototypical inheritance in AngularJS?
... this input textbox does not result in a new child property. The model is now bound to a property of the parent scope (because $parent is a child scope property that references the parent scope).
For all scopes (prototypal or not), Angular always tracks a parent-child relationship (i.e., a hiera...
Update multiple columns in SQL
...equired. I am currently engaged in so doing and in SQL Server 2012 you can now update more than 1 column per @John Woo answer below.
– Hilary
Aug 24 '16 at 10:59
...
Simulating tremor (from e.g. Parkinson's Disease) with the mouse on a webpage?
... I didn't find the time to try it out myself, but maybe you know this one: does the pointer-lock API also work outside a canvas? Or is it restricted to a canvas?
– Joshua Muheim
Aug 13 '14 at 12:34
...
Create empty file using python [duplicate]
...ronment with Jython/IronPython? Well too bad you didn't close those files, now your program is leaking like a sieve ;) It's especially awful since 2.5, as with makes it easier to close the file timely (and even in the face of exceptions and circular references) and the code becomes clearer to boot.
...
In what order are Panels the most efficient in terms of render time and performance?
... when more than one panel would suitable for the layout I want, however I know there is a difference in render times for different panel types.
...
What is the difference between Strategy pattern and Dependency Injection?
...e trying to achieve. The Strategy pattern is used in situations where you know that you want to swap out implementations. As an example, you might want to format data in different ways - you could use the strategy pattern to swap out an XML formatter or CSV formatter, etc.
Dependency Injection is d...