First, There are serveral revert situation:
Local:
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# this will detach your HEAD, i.e. leave you with no branch checked out.gitcheckout0d1d7fc32gitcheckout-bold-state0d1d7fc32
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# Don't do it if you have uncommitted work you want to keepgitreset--hard0d1d7fc32# Alternatively, if there's work to keep:gitstashgitreset--hard0d1d7fc32gitstashpop# This saves the modifications, then reapplies that patch after resetting.# You could get merge conflicts, if you've modified things which were# changed since the commit you reset to
A happy number is defined by the following process. Starting with any positive integer, replace the number by the sum of the squares of its digits, and repeat the process until the number equals 1 (where it will stay), or it loops endlessly in a cycle which does not include 1. Those numbers for which this process ends in 1 are happy numbers, while those that do not end in 1 are unhappy numbers (or sad numbers[1]).
More formally, given a number , define a sequence , , … where is the sum of the squares of the digits of . Then n is happy if and only if there exists i such that .
If a number is happy, then all members of its sequence are happy; if a number is unhappy, all members of the sequence are unhappy.
For example, 19 is happy, as the associated sequence is:
12 + 92 = 82
82 + 22 = 68
62 + 82 = 100
12 + 02 + 02 = 1.
The happy numbers below 500 are:
1, 7, 10, 13, 19, 23, 28, 31, 32, 44, 49, 68, 70, 79, 82, 86, 91, 94, 97, 100, 103, 109, 129, 130, 133, 139, 167, 176, 188, 190, 192, 193, 203, 208, 219, 226, 230, 236, 239, 262, 263, 280, 291, 293, 301, 302, 310, 313, 319, 320, 326, 329, 331, 338, 356, 362, 365, 367, 368, 376, 379, 383, 386, 391, 392, 397, 404, 409, 440, 446, 464, 469, 478, 487, 490, 496
So class have singleton_methods, that should live in the meta_class and that method should be a instance method there
extend just put test method to meta class. then later one will cover the first one
# get the submodule initiallygitsubmoduleaddssh://blasubmodule_dirgitsubmoduleinit# time passes, submodule upstream is updated# and you now want to update# change to the submodule directorycdsubmodule_dir# checkout desired branchgitcheckoutmaster# updategitpull# get back to your project rootcd..# now the submodules are in the state you want, sogitcommit-am"Pulled down update to submodule_dir"gitsubmodulesupdate--initgitsubmoduleforeachgitpulloriginmaster