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Calculating moving average
...here.
You can find more info about ?frollmean in manual, also available online at ?frollmean.
Examples from manual below:
library(data.table)
d = as.data.table(list(1:6/2, 3:8/4))
# rollmean of single vector and single window
frollmean(d[, V1], 3)
# multiple columns at once
frollmean(d, 3)
...
What database does Google use?
...storage system developed to meet the requirements of
today's interactive online services. Megastore blends the scalability
of a NoSQL datastore with the convenience of a traditional RDBMS in a
novel way, and provides both strong consistency guarantees and high
availability. We provide fully ...
How to remove leading and trailing whitespace in a MySQL field?
...useful for other reasons, as described in this blog post.
Demo
Rextester online demo. In particular, the last row shows the other methods failing but the regular expression method succeeding.
Function:
-- ------------------------------------------------------------------------------------
-- USA...
Signed to unsigned conversion in C - is it always safe?
...e
printf("boring");
return 0;
}
You can use this link to try this online: https://repl.it/repls/QuickWhimsicalBytes
Bonus: Arithmetic Conversion Side Effect
Arithmetic conversion rules can be used to get the value of UINT_MAX by initializing an unsigned value to -1, ie:
unsigned int umax...
How do I dynamically assign properties to an object in TypeScript?
...
}
// Now your simple initialization works
var foo:IFoo = {};
Try it online
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How to parse JSON using Node.js? [closed]
... here, i've published a demo where you can see and play with this answer online (the parsing example is in app.js file - then click on the run button and see the result in the terminal): link you can modify the code and see the impact...
– nathan g
Jan 6 '15...
How to clear gradle cache?
...radle's generic cache infrastructure.
TIP: search for Gradle's cache help online without mentioning the keyword 'android' to get help for the currently relevant cache.
EDIT 2: due to tir38's question in a comment below, i am testing using an Android Gradle plugin v3.4.2 project. the gradle cache i...
Visual Studio SP1 error: silverlight_sdk.msi is unavailable
...e. That makes your answer more useful. Also, sometimes websites stop being online, and that will make your answer useless
– Carlos Robles
Dec 10 '13 at 15:10
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Could not load file or assembly 'System.Web.Http 4.0.0 after update from 2012 to 2013
...stall nuget)
In the manage NuGet Packages window on the left side click online then in top right search for Web Host and install Microsoft ASP.NET Web API 2.1 Web Host. (Once installed the install button will change to a green check)
After that the project will reload and when it's build again t...
Are there any disadvantages to always using nvarchar(MAX)?
...ent storage etc). It fails to mention the actual differences: no index, no online operations on MAX types
– Remus Rusanu
Aug 25 '11 at 15:53
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