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In Ruby on Rails, what's the difference between DateTime, Timestamp, Time and Date?

... a just a front for a unix timestamp. Its valid range goes from 1970 to 2038. The difference here, aside from the various built-in functions within the database engine, is storage space. Because DATETIME stores every digit in the year, month day, hour, minute and second, it uses up a total of 8 byte...
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Zero-pad digits in string

... Gras Double 13k66 gold badges5050 silver badges4848 bronze badges answered Nov 27 '08 at 17:59 Konrad RudolphKonrad Rudolph 46...
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How to add/update an attribute to an HTML element using JavaScript?

...Core-20040407/… – valentinas Aug 28 '12 at 4:47 1 When I do the following: document.getElementB...
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`levels

... answered May 8 '12 at 2:40 OwenOwen 35.2k1313 gold badges8686 silver badges116116 bronze badges ...
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R object identification

... 128 I usually start out with some combination of: typeof(obj) class(obj) sapply(obj, class) sapply(...
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Difference between FOR and AFTER triggers?

...in columns only. – Ben Mar 9 '17 at 8:31 add a comment  |  ...
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How to change a module variable from another module?

...36 Marco 8,48611 gold badge3131 silver badges4848 bronze badges answered Aug 21 '10 at 6:41 aaronasterlingaaro...
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Change a branch name in a Git repo

...or. – Mohammad Arif Aug 3 '15 at 9:18 @MohammedArif With -m, it renames the old branch, so it does delete the previous...
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How do I convert a String to an int in Java?

... use an Ints method from the Guava library, which in combination with Java 8's Optional, makes for a powerful and concise way to convert a string into an int: import com.google.common.primitives.Ints; int foo = Optional.ofNullable(myString) .map(Ints::tryParse) .orElse(0) ...
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SSL Error: unable to get local issuer certificate

... 48 jww is right — you're referencing the wrong intermediate certificate. As you have been issued...