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How can I obtain the element-wise logical NOT of a pandas Series?

... the bitwise operator: In [1]: ~True Out[1]: -2 As @geher says, you can convert it to bool with astype before you inverse with ~ ~df['A'].astype(bool) 0 False 1 True Name: A, dtype: bool (~df['A']).astype(bool) 0 True 1 True Name: A, dtype: bool ...
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Should operator

...ment for making these free standing functions as this lets auto conversion convert both sides if they are not the same type, while member functions only allow the rhs to be auto converted. I find this a paper man argument as you don't really want auto conversion happening in the first place (usually...
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Parcelable encountered IOException writing serializable object getactivity()

... to get image. I've already set it before and now I just get it first than convert it and pass it separatly: Bitmap image = selectedItem.getPlacePhoto(); image.compress(Bitmap.CompressFormat.PNG, 100, stream); byte[] byteArray = stream.toByteArray(); Intent intent = new Intent(YourPresentActivi...
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How to reverse a string in Go?

... rune[i], rune[n-1-i] = rune[n-1-i], rune[i] } // Convert back to UTF-8. output := string(rune) fmt.Println(output) } share | improve this answer ...
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How to change time and timezone in iPhone simulator?

...us_bar "iPad Pro (11-inch)" override --time '2020-01-12T10:41:00-06:00' it converts that time to my current CET timezone and sets iOS simulator time to 5:41pm – randomcontrol Jan 12 at 18:32 ...
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Best practices/performance: mixing StringBuilder.append with String.concat

...done automatically by the compiler. The Java2 compiler will automatically convert the following: String s = s1 + s2; to String s = (new StringBuffer()).append(s1).append(s2).toString(); Taken straight from the Java Best Practices on Oracles website. ...
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How to merge a list of lists with same type of items to a single list of items?

... @SwimBikeRun SelectMany is used to take an IEnumerable of TSources, convert each TSource in the list into an IEnumerable of TResults, then concatenate all those IEnumerables into one big one. In this case you have a list of lists to start, so if you want to concatenate them the function to ma...
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How to set DialogFragment's width and height?

... If you convert directly from resources values: int width = getResources().getDimensionPixelSize(R.dimen.popup_width); int height = getResources().getDimensionPixelSize(R.dimen.popup_height); getDialog().getWindow().setLayou...
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How to calculate the difference between two dates using PHP?

... up to date solution see jurka's answer below You can use strtotime() to convert two dates to unix time and then calculate the number of seconds between them. From this it's rather easy to calculate different time periods. $date1 = "2007-03-24"; $date2 = "2009-06-26"; $diff = abs(strtotime($date...
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ASP.NET MVC: Custom Validation by DataAnnotation

...<string>(); var totalLength = values.Sum(x => x.Length) + Convert.ToString(value).Length; if (totalLength < this.MinLength) { return new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName)); } return null; } } ...