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Java “lambda expressions not supported at this language level”
I was testing out some new features of Java 8 and copied the example into my IDE (Eclipse originally, then IntelliJ) as shown here
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Select SQL Server database size
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, log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
, row_size_mb = CAST(SUM(CASE WHEN type_desc = 'ROWS' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
, total_size_mb = CAST(SUM(size) * 8. / 1024 AS DECIMAL(8,2))
FROM sys.master_files WITH(NOW...
How to change the order of DataFrame columns?
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0 1 2 3 4 mean
0 0.445598 0.173835 0.343415 0.682252 0.582616 0.445543
1 0.881592 0.696942 0.702232 0.696724 0.373551 0.670208
2 0.662527 0.955193 0.131016 0.609548 0.804694 0.632596
3 0.260919 0.783467 0.593433 0.033426 0.5120...
Reference — What does this symbol mean in PHP?
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edited Nov 12 '18 at 8:39
community wiki
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Context switches much slower in new linux kernels
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edited Jul 8 '14 at 17:03
answered Aug 24 '12 at 22:10
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Summarizing multiple columns with dplyr? [duplicate]
...;int> <dbl> <dbl> <dbl> <dbl>
#> 1 1 3.08 2.98 2.98 2.91
#> 2 2 3.03 3.04 2.97 2.87
#> 3 3 2.85 2.95 2.95 3.06
If you want to summarize only certain columns, use summarise_at or summarise_if functions.
Alternatively, the purrrlyr package p...
How to deal with SettingWithCopyWarning in Pandas?
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879
The SettingWithCopyWarning was created to flag potentially confusing "chained" assignments, su...
Two versions of python on linux. how to make 2.7 the default
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edited Oct 8 '13 at 19:47
answered Oct 8 '13 at 19:17
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How to check iOS version?
...a comparison.
[[NSProcessInfo processInfo] operatingSystemVersion] in iOS 8 and above.
As of Xcode 9:
if (@available(iOS 9, *)) {}
The full answer …
In Objective-C, and Swift in rare cases, it's better to avoid relying on the operating system version as an indication of device or OS capabil...