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What is the ultimate postal code and zip regex?
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There is none.
Postal/zip codes around the world don't follow a common pattern. In some countries they are made up by numbers, in others they can be combinations of numbers an letters, some can contain spaces, others dots, the number ...
Java List.add() UnsupportedOperationException
...cts to a List<String> instance but it throws an UnsupportedOperationException .
Does anyone know why?
7 Answers
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Should arrays be used in C++?
...ack C++11 support however. You will have to decide when it's better to use one rather than the other given the lack of std::array
– Nowayz
May 25 '12 at 9:59
4
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Unix command to find lines common in two files
...command which could print the common lines from two or more files, does anyone know its name? It was much simpler than diff .
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What are some examples of commonly used practices for naming git branches? [closed]
...ned tokens
Choose short tokens so they do not add too much noise to every one of your branch names. I use these:
wip Works in progress; stuff I know won't be finished soon
feat Feature I'm adding or expanding
bug Bug fix or experiment
junk Throwaway branch created to experim...
Redirecting to a relative URL in JavaScript
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You can do a relative redirect:
window.location.href = '../'; //one level up
or
window.location.href = '/path'; //relative to domain
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What is the best way to test for an empty string in Go?
...taste and about clarity.
Russ Cox writes in a golang-nuts thread:
The one that makes the code clear.
If I'm about to look at element x I typically write
len(s) > x, even for x == 0, but if I care about
"is it this specific string" I tend to write s == "".
It's reasonable to assu...
Why does ConcurrentHashMap prevent null keys and values?
... barely tolerable in non-concurrent maps can't be
accommodated. The main one is that if map.get(key) returns null, you
can't detect whether the key explicitly maps to null vs the key isn't
mapped. In a non-concurrent map, you can check this via
map.contains(key), but in a concurrent one, the...
Check if a variable is a string in JavaScript
...to use and easier to read.
Either function will handle the case DRAX mentioned... that is, they both check if (A) the variable is a string literal or (B) it's an instance of the String object. In either case, these functions correctly identify the value as being a string.
lodash / Underscore.js
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What are OLTP and OLAP. What is the difference between them?
...an online store/website, and you want to compute things like
the "total money spent by all users"
"what is the most sold product"
This falls into the analytics/business intelligence domain, and therefore OLAP is probably more suited.
If you think in terms of "It would be nice to know how/what/h...