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Can dplyr package be used for conditional mutating?
...adability for myself and others, but in this case it seems like data.table wins.
– Paul McMurdie
Feb 7 at 19:50
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Transactions in REST?
I'm wondering how you'd implement the following use-case in REST. Is it even possible to do without compromising the conceptual model?
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Protecting executable from reverse engineering?
...te the modified code much more often than you modify it, it may still be a win).
– jilles
Jun 26 '11 at 12:55
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Why should I prefer single 'await Task.WhenAll' over multiple awaits?
...zation switch and threadpool shuffle. There could be a significant overall win with WhenAll() in that kind of scenario, so... it really depends.
– Chris Moschini
Jan 29 '15 at 23:00
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Is there a difference between copy initialization and direct initialization?
...t set up one implicit conversion sequence.
I tried hard and got the following code to output different text for each of those forms, without using the "obvious" through explicit constructors.
#include <iostream>
struct B;
struct A {
operator B();
};
struct B {
B() { }
B(A const&...
What does O(log n) mean exactly?
...t's versatile as an example. Plus I got to use robots in my explanation! A win all-around. (Also, it looks like your answer was made before I was even a member on StackOverflow to begin with!)
– John Feminella
Feb 23 '10 at 0:40
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Alternative to google finance api [closed]
...amples, visit this page.
For XML and JSON-based data, you can do the following:
Don't use YQL (Yahoo Query Language)**
For example:
http://developer.yahoo.com/yql/console/?q=select%20*%20from%20yahoo.finance
.quotes%20where%20symbol%20in%20(%22YHOO%22%2C%22AAPL%22%2C%22GOOG%22%2C%22
MSFT%22)%0...
No ConcurrentList in .Net 4.0?
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The biggest scenario where a ConcurrentList would be a win would be when there isn't a whole lot of activity adding to the list, but there are many concurrent readers. One could reduce the readers' overhead to a single memory-barrier (and eliminate even that if readers weren't c...
What's the difference between EscapeUriString and EscapeDataString?
... Exactly right. EscapeUriString (like EscapeUrl's default behavior in Win32) was created by someone who didn't understand URIs or escaping. It's a misguided attempt to create something that takes a malformed URI and sometimes turn it into the intended version. But it doesn't have the informatio...
Non-Relational Database Design [closed]
...HTML. (HUGE!!)
For normal webapps, document/JSON-based DBs are a massive win, and the drawbacks of less flexible queries and some extra code for data validation seems a small price to pay.
Have you hit your head against anything that seems impossible?
Not yet. Map/reduce as a means of querying a...