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Remove NA values from a vector
...1975.4 1e+06 c
For reference, here's the original test of x[!is.na(x)] vs na.omit:
microbenchmark::microbenchmark(
purrr::map(airquality,function(x) {x[!is.na(x)]}),
purrr::map(airquality,na.omit),
times = 1000000)
Unit: microseconds
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jQuery - setting the selected value of a select control via its text description
...M properties as well as HTML attributes. (Google javascript dom properties vs attributes if you don't know the distinction.)
– Mark Amery
Aug 4 '13 at 9:27
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MySQL LIKE IN()?
...: 8.5s; 2 terms: REGEXP: 22.1s, LIKE: 9.69; '^(hemoglobin|hematr?ocrit).*' vs 3 term like: REGEXP: 36.3, LIKE: 9.59.
– Jesse Clark
Mar 11 '16 at 18:19
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How to determine programmatically whether a particular process is 32-bit or 64-bit
... see 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 GetNativeS...
Config Error: This configuration section cannot be used at this path
... Visual Studio 2015 the applicationHost.config is stored in $(solutionDir).vs\config\applicationhost.config
Find the section that showed up in the “config source” part of the error message page. For me this has typically been “modules” or “handlers”
Change the overrideModeDefault att...
How to get image size (height & width) using JavaScript?
...M On Chrome 35, it’s 16 times faster: jsperf.com/document-getelementbyid-vs-jquery/5
– bfontaine
Aug 12 '14 at 13:52
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How do I erase an element from std::vector by index?
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-1 The last line does not compile (at least in VS2017). The code assumes that vector::iterator is implicitly constructible from a raw pointer, which is not required by the standard.
– CuriousGeorge
Apr 11 '18 at 16:11
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pythonic way to do something N times without an index variable?
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@Hamish: My test with 2.6 says 32% faster (23.2 us vs 17.6 us for N=1000). But that is a really time time anyways. I would default to the OP's code because it is more immediately readable (to me).
– Mike Boers
Jun 4 '10 at 1:31
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How to get a group of toggle buttons to act like radio buttons in WPF?
...u can use the SelectionMode property of the ListBox to handle SingleSelect vs MultiSelect.
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AngularJS - Binding radio buttons to models with boolean values
...ave the value without the curly braces {{}} Example: ng-value="choice2.id" vs value="{{choice2.id}}"
– Andi
Oct 21 '14 at 11:26
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