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How To: Best way to draw table in console app (C#)

...ring text, int width) { text = text.Length > width ? text.Substring(0, width - 3) + "..." : text; if (string.IsNullOrEmpty(text)) { return new string(' ', width); } else { return text.PadRight(width - (width - text.Length) / 2).PadLeft(width); } } ...
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Conditional Replace Pandas

... .ix indexer works okay for pandas version prior to 0.20.0, but since pandas 0.20.0, the .ix indexer is deprecated, so you should avoid using it. Instead, you can use .loc or iloc indexers. You can solve this problem by: mask = df.my_channel > 20000 column_name = 'my_chann...
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Efficient way to determine number of digits in an integer

... 107 Well, the most efficient way, presuming you know the size of the integer, would be a lookup. S...
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How to round a number to n decimal places in Java

...ngMode(RoundingMode.CEILING); for (Number n : Arrays.asList(12, 123.12345, 0.23, 0.1, 2341234.212431324)) { Double d = n.doubleValue(); System.out.println(df.format(d)); } gives the output: 12 123.1235 0.23 0.1 2341234.2125 EDIT: The original answer does not address the accuracy of th...
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Which is better, number(x) or parseFloat(x)?

... same: parseFloat('3'); // => 3 Number('3'); // => 3 parseFloat('1.501'); // => 1.501 Number('1.501'); // => 1.501 parseFloat('1e10'); // => 10000000000 Number('1e10'); // => 10000000000 So as long as you have standard numeric input, there's no difference. However, if your input...
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Create an index on a huge MySQL production table without table locking

... [2017] Update: MySQL 5.6 has support for online index updates https://dev.mysql.com/doc/refman/8.0/en/innodb-online-ddl-operations.html#online-ddl-index-syntax-notes In MySQL 5.6 and higher, the table remains available for...
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Calculate the center point of multiple latitude/longitude coordinate pairs

...ing them has weird edge cases with angles when they wrap from 359' back to 0'. A much earlier question on SO asked about finding the average of a set of compass angles. An expansion of the approach recommended there for spherical coordinates would be: Convert each lat/long pair into a unit-lengt...
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Remove border from IFrame

... capital ‘B’). So it would look like: <iframe src="myURL" width="300" height="300" frameBorder="0">Browser not compatible.</iframe> share | improve this answer | ...
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Seeding the random number generator in Javascript

...| edited May 23 '17 at 12:02 Community♦ 111 silver badge answered Feb 6 '09 at 17:42 ...
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HTML5 Email Validation

... 120 In HTML5 you can do like this: <form> <input type="email" placeholder="Enter your emai...