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Set time part of DateTime in ruby

...e a datetime object eg DateTime.now . I want to set hours and minutes to 0 (midnight). How can I do that? 4 Answers ...
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Are there any O(1/n) algorithms?

...he following one: def get_faster(list): how_long = (1 / len(list)) * 100000 sleep(how_long) Clearly, this function spends less time as the input size grows … at least until some limit, enforced by the hardware (precision of the numbers, minimum of time that sleep can wait, time to proce...
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How to make rounded percentages add up to 100%

...ff = target - _.reduce(l, function(acc, x) { return acc + Math.round(x) }, 0); return _.chain(l). sortBy(function(x) { return Math.round(x) - x }). map(function(x, i) { return Math.round(x) + (off > i) - (i >= (l.length + off)) }). value(); } foo([13.62...
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How to format strings in Java

... 140 In addition to String.format, also take a look java.text.MessageFormat. The format less terse a...
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How to get datetime in JavaScript?

How to get date time in JavaScript with format 31/12/2010 03:55 AM? 7 Answers 7 ...
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The name 'model' does not exist in current context in MVC3

...toryType="System.Web.Mvc.MvcWebRazorHostFactory, System.Web.Mvc, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /> <pages pageBaseType="System.Web.Mvc.WebViewPage"> <namespaces> <add namespace="System.Web.Mvc" /> <add namespace="S...
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Why doesn't println! work in Rust unit tests?

...in.rs; ./main running 1 test test test ... ok test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured % ./main --nocapture running 1 test Hidden output test test ... ok test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured % cargo test -- --nocapture running 1 test Hidden output test ...
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How to use Active Support core extensions

I have Active Support 3.0.3 installed and Rails 3.0.3 with Ruby 1.8.7. 5 Answers 5 ...
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Generate a random double in a range

...| edited Sep 27 '15 at 18:03 answered Sep 9 '10 at 21:17 mo...
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How can I shrink the drawable on a button?

...rawable = getResources().getDrawable(R.drawable.s_vit); drawable.setBounds(0, 0, (int)(drawable.getIntrinsicWidth()*0.5), (int)(drawable.getIntrinsicHeight()*0.5)); ScaleDrawable sd = new ScaleDrawable(drawable, 0, scaleWidth, scaleHeight); Button btn = findViewbyId(R.id.yo...