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Set time part of DateTime in ruby

... TIMEZONE: Can be altered by the keyword offset in the argument hash: DateTime.now.change({ hour: 0, min: 0, sec: 0 offset: '+02:00'}) – Ekkstein Dec 6 '17 at 14:23 ...
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Setting design time DataContext on a Window is giving a compiler error?

...'.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f8303803%2fsetting-design-time-datacontext-on-a-window-is-giving-a-compiler-error%23new-answer', 'question_page'); } ); Post as a guest ...
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How to query as GROUP BY in django?

...butes. From the docs: cities = [ {'name': 'Mumbai', 'population': '19,000,000', 'country': 'India'}, {'name': 'Calcutta', 'population': '15,000,000', 'country': 'India'}, {'name': 'New York', 'population': '20,000,000', 'country': 'USA'}, {'name': 'Chicago', 'population': '7,000,000...
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What does -> mean in Python function definitions?

...ies, so you can do this: >>> '{:,} {}'.format(kinetic_energy(20,3000), kinetic_energy.__annotations__['return']) '90,000,000.0 Joules' You can also have a python data structure rather than just a string: >>> rd={'type':float,'units':'Joules','docstring':'Given mass and ve...
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Set value to null in WPF binding

...w.height(), elemTop = $elem.offset().top, elemBottom = elemTop + $elem.height(); if ((docViewTop < elemTop) && (docViewBottom > elemBottom)) { ...
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Java 8: performance of Streams vs Collections

...Vanilla.N) public class StreamVsVanilla { public static final int N = 10000; static List&lt;Integer&gt; sourceList = new ArrayList&lt;&gt;(); static { for (int i = 0; i &lt; N; i++) { sourceList.add(i); } } @Benchmark public List&lt;Double&gt; va...
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Convert all first letter to upper case, rest lower for each word

...Thread.CurrentThread.CurrentCulture.TextInfo.ToTitleCase(s.ToLower()); IL_0000: ldstr "THIS IS MY TEXT RIGHT NOW" IL_0005: stloc.0 // s IL_0006: call System.Threading.Thread.get_CurrentThread IL_000B: callvirt System.Threading.Thread.get_CurrentCulture IL_0010: callvirt ...
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Mean per group in a data.frame [duplicate]

...4], list(d$Name), mean) Group.1 Rate1 Rate2 1 Aira 16.33333 47.00000 2 Ben 31.33333 50.33333 3 Cat 44.66667 54.00000 Here we aggregate columns 3 and 4 of data.frame d, grouping by d$Name, and applying the mean function. Or, using a formula interface: aggregate(. ~ Name, d[-...
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SASS - use variables across multiple files

...amed _variables.scss in that file i declare variables like so: $black: #000; $white: #fff; then I have the style.scss file in which i import all of my other scss files like this: // Utilities @import "utilities/variables"; // Base Rules @import "base/normalize"; @import "base/global"; then,...
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Measure elapsed time in Swift

...rence in nano seconds (UInt64) let timeInterval = Double(nanoTime) / 1_000_000_000 // Technically could overflow for long running tests print("Time to evaluate problem \(problemNumber): \(timeInterval) seconds") return theAnswer } Old answer For Swift 1 and 2, my function uses NSDate:...