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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...
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...
SAML vs federated login with OAuth
...more about delegating access to something. You are basically allowing someone to "act" as you. Its most commonly used to grant access api's that can do something on your behalf.
They are two completely different things.
Some examples that might help out.
OAuth think of an twitter. Lets say y...
Principles for Modeling CouchDB Documents
... at which to split up documents is where there might be conflicts (as mentioned earlier). You should never keep massively "tangled" documents together in a single document as you'll get a single revision path for completely unrelated updates (comment addition adding a revision to the entire site doc...
How to loop through a plain JavaScript object with the objects as members?
...an't use it in the promise' then-function. You var in the loop exists only one time, so it has in every then-function the same, even the last value. If you have that problem, try "Object.keys(obj).forEach" or my answer below.
– Biber
Nov 22 '16 at 21:15
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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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If strings are immutable in .NET, then why does Substring take O(n) time?
... not persistent"?
Because when you look at operations that are typically done on strings in .NET programs, it is in every relevant way hardly worse at all to simply make an entirely new string. The expense and difficulty of building a complex persistent data structure doesn't pay for itself.
Peopl...
How do I reverse an int array in Java?
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Can any one suggest a reversal with out temp variable !!
– sg28
Jul 11 '18 at 6:23
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