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How to convert decimal to hexadecimal in JavaScript
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85
The code below will convert the decimal value d to hexadecimal. It also allows you to add paddi...
Remove NA values from a vector
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purrr::map(airquality, na.omit) 95.7 107.4 185.5108 129.3 190.50 534795.5 1e+06 b
purrr::map(airquality, ~purrr::discard(.x, .p = is.na)) 3391.7 3648.6 5615.8965 4079.7 6486.45 1121975.4 1e+06 c
For reference, here's the original test of x[!is.na(x)] vs na.o...
Extract a dplyr tbl column as a vector
... works fine with data frames:
> mtcars %>% pull(5)
[1] 3.90 3.90 3.85 3.08 3.15 2.76 3.21 3.69 3.92 3.92 3.92 3.07 3.07 3.07 2.93 3.00 3.23 4.08 4.93 4.22 3.70 2.76 3.15 3.73 3.08 4.08 4.43
[28] 3.77 4.22 3.62 3.54 4.11
A nice way to do this in v0.2 of dplyr:
iris2 %>% select(Species...
How can I use Timer (formerly NSTimer) in Swift?
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Midhun MPMidhun MP
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How to determine programmatically whether a particular process is 32-bit or 64-bit
...e https://msdn.microsoft.com/en-us/library/windows/desktop/ms684139%28v=vs.85%29.aspx
public static bool Is64Bit(Process process)
{
if (!Environment.Is64BitOperatingSystem)
return false;
// if this method is not available in your version of .NET, use GetNativeSyst...
Return index of greatest value in an array
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85
In one line and probably faster then arr.indexOf(Math.max.apply(Math, arr)):
var a = [0, 2...
LINQ's Distinct() on a particular property
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Jon SkeetJon Skeet
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Determine whether an array contains a value [duplicate]
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codeapecodeape
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Paste multiple columns together
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David ArenburgDavid Arenburg
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How to set input type date's default value to today?
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85
The following code works well:
<input type="date" value="<?php echo date('Y-m-d'); ?>...