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AWS MySQL RDS vs AWS DynamoDB [closed]
...prise compared to the slick backup of RDS
GUI - bad UX, limited search, no fun.
Speed - Response time is problematic compared to RDS. You find yourself building elaborate caching mechanism to compensate for it in places you would have settled for RDS's internal caching.
Data Integrity - While the co...
How to remove all whitespace from a string?
... str_trim
stringr provides more human-readable wrappers around the base R functions (though as of Dec 2014, the development version has a branch built on top of stringi, mentioned below). The equivalents of the above commands, using [str_replace_all][3], are:
library(stringr)
str_replace_all(x, f...
The Definitive C++ Book Guide and List
...icial errata list. A partial 3rd party errata list is available at (http://www.computersciencelab.com/Eckel.htm), but it’s apparently not maintained.
Scientific and Engineering C++: An Introduction to Advanced Techniques and Examples (John Barton and Lee Nackman)
It is a comprehensive and very de...
App Inventor 2 UrsPahoMqttClient 拓展 - 物联网轻量级MQTT协议 · App Inventor 2 中文网
...计的轻量级协议，基于TCP协议实现。
MQTT 协议文档：https://mqtt.org/
虽然 App Inventor 有现成的 MQTT 扩展，但它们需要额外的 JavaScript 或外部配置文件。此处介绍的 MQTT 客户端组件完全独立工作，不需要任何外部元素。...
iPhone: Setting Navigation Bar Title
...
123
if you are doing it all by code in the viewDidLoad method of the UIViewController you should o...
What is “Orthogonality”?
...
So is functional programming completely orthogonal?
– corazza
Oct 11 '13 at 10:24
...
Get first n characters of a string
...ss) normal characters or 10 characters followed by '...'
Update 2:
Or as function:
function truncate($string, $length, $dots = "...") {
return (strlen($string) > $length) ? substr($string, 0, $length - strlen($dots)) . $dots : $string;
}
Update 3:
It's been a while since I wrote this an...
Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
...
Or more fun: "int x=33333333; x+=1.0f;".
– supercat
Apr 20 '17 at 19:31
5
...
What are the most common non-BMP Unicode characters in actual use? [closed]
...er, you should install George Douros’s Symbola font. It also has all the fun Unicode 6.0.0 code points in it, too.
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Python: TypeError: cannot concatenate 'str' and 'int' objects [duplicate]
... you want to concatenate int or floats to a string you must use this:
i = 123
a = "foobar"
s = a + str(i)
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