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Why is exception.printStackTrace() considered bad practice?
...rself, use logging framework like Logback or Log4J, to not put them on the raw console because it is very hard to control it.
With logging framework you can easily redirect stack traces to file, console or even send them to a specified e-mail address. With hardcoded printStackTrace() you have to li...
Unicode equivalents for \w and \b in Java regular expressions?
...\w))
with the \w defined in the appropriate way.
(You might think it strange that the A and C components are opposites. In a perfect world, you should be able to write that AB|D, but for a while I was chasing down mutual exclusion contradictions in Unicode properties — which I think I’ve tak...
How to write a CSS hack for IE 11? [duplicate]
...org/css_hacks.html to see if the ie11 one is working natively for you. The raw css-only ie10-11 media query above should still work and combining that with the ie11 one to separate ie10 from ie11 within the media query (without the javascript) should work as well.
– Jeff Clayto...
Short description of the scoping rules?
...uilt-in (Python) — Names preassigned in the built-in names module: open, range, SyntaxError, etc
So, in the case of
code1
class Foo:
code2
def spam():
code3
for code4:
code5
x()
The for loop does not have its own namespace. In LEGB order, the sc...
doGet and doPost in Servlets
...out a bookmarkable request. Clicking a link, clicking a bookmark, entering raw URL in browser address bar, etcetera will all fire a HTTP GET request. If a Servlet is listening on the URL in question, then its doGet() method will be called. It's usually used to preprocess a request. I.e. doing some b...
How to use Swift @autoclosure
...t a cooked function(or returned type) meanwhile a general closure accept a raw function
@autoclosure argument type parameter must be '()'
@autoclosure ()
@autoclosure accept any function with only appropriate returned type
Result of closure is calculated by demand
Let's take a look at examp...
Why does Go have a “goto” statement
... The referenced code is not optimized for readability. It is optimized for raw performance, using a goto that spans 22 lines within a single function. (And Thomas Ahle's proposal is even more readable to my eye.)
– joel.neely
Jun 28 '16 at 11:14
...
C++, Free-Store vs Heap
... I generally think of the heap (via maloc/free) as a sort of 'raw' material supplier. You ask for a chunk of memory you get it no frills. You have to build any structures yourself. The Free Store (new/delete) is more like a 'finished goods' supplier. You ask for an object and it gets a...
C++ auto keyword. Why is it magic?
...ference or rvalue reference according to the initializer, which is used in range-based for loop.
If auto is used to declare multiple variables, the deduced types must match. For example, the declaration auto i = 0, d = 0.0; is ill-formed, while the declaration auto i = 0, *p = &i; is well-forme...
Do I cast the result of malloc?
...e (alleged) desired type right next to the arithmetic you're doing for the raw size of that variable. I bet you could do an SO study that shows that malloc() bugs are caught much faster when there's a cast. As with assertions, annotations that reveal intent decrease bugs.
Repeating yourself in a wa...