大约有 10,000 项符合查询结果(耗时:0.0159秒) [XML]
detach all packages while working in R
...ng required package: vegan
Loading required package: permute
This is vegan 2.0-0
> sessionInfo()
R version 2.13.1 Patched (2011-09-13 r57007)
Platform: x86_64-unknown-linux-gnu (64-bit)
locale:
[1] LC_CTYPE=en_GB.utf8 LC_NUMERIC=C
[3] LC_TIME=en_GB.utf8 LC_COLLATE=en_...
How can I use PowerShell with the Visual Studio Command Prompt?
...te: this function will be available in the PowerShell Community Extensions 2.0 module-based release coming soon.
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How do I update the GUI from another thread?
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For .NET 2.0, here's a nice bit of code I wrote that does exactly what you want, and works for any property on a Control:
private delegate void SetControlPropertyThreadSafeDelegate(
Control control,
string propertyName,
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JOIN queries vs multiple queries
... two select method took 3.7 seconds for 50,000 reads whereas the JOIN took 2.0 seconds on my at-home slow computer. INNER JOIN and LEFT JOIN did not make a difference. Fetching multiple rows (e.g., using IN SET) yielded similar results.
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What is the difference between OpenID and SAML?
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Original OpenID 2.0 vs SAML
They are two different protocols of authentication and they differ at the technical level.
From a distance, differences start when users initiate the authentication. With OpenID, a user login is usually an HTTP ...
What are Bearer Tokens and token_type in OAuth 2?
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Anyone can define "token_type" as an OAuth 2.0 extension, but currently "bearer" token type is the most common one.
https://tools.ietf.org/html/rfc6750
Basically that's what Facebook is using. Their implementation is a bit behind from the latest spec though.
If you...
django 1.5 - How to use variables inside static tag
...nd I'm not sure if this method could be done back then, But now, in Django 2.0 this seems to work fine for me.
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AngularJs “controller as” syntax - clarification?
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From what I've read, $scope will be removed in Angular 2.0, or at least how we view the use of $scope. It might be good to start using controller as as the release of 2.0 nears.
Video link here for more discussion on it.
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How to log request and response body with Retrofit-Android?
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Retrofit 2.0 :
UPDATE: @by Marcus Pöhls
Logging In Retrofit 2
Retrofit 2 completely relies on OkHttp for any network operation. Since OkHttp is a peer dependency of Retrofit 2, you won’t need to add an additional dependency once...
Google Maps V3 - How to calculate the zoom level for a given bounds
...{
return floor(Math.log(mapPx / worldPx / fraction) / Math.log(2.0))
}
val ne = bounds.northeast;
val sw = bounds.southwest;
val latFraction = (latRad(ne.latitude) - latRad(sw.latitude)) / Math.PI;
val lngDiff = ne.longitude - sw.longitude;
...
