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Remove empty array elements
...ore filtering it? I think setting a the second time just resets the first one.
– Cullub
Jan 31 '16 at 0:10
5
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What is the best way to compute trending topics or tags?
...time.
You could also use a z-score for values such as change in views from one day to next day to locate the abnormal values for increasing/decreasing views per day. This is like using the slope or derivative of the views per day graph.
If you keep track of the current size of the population, the cu...
How can I reverse the order of lines in a file?
... mentioning: tac (the, ahem, reverse of cat). Part of coreutils.
Flipping one file into another
tac a.txt > b.txt
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MySQL error code: 1175 during UPDATE in MySQL Workbench
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I mentioned that I already disabled the safe update option from the GUI which have the same effect as id I typed the command. However, thanks for your answer, but I already answered my question. Check my answer to know what was the ...
Is memcached a dinosaur in comparison to Redis? [closed]
...they were thinking...oh wait maybe i should add ReJSON because natively no one cares about JSON in the world right
– PirateApp
Dec 20 '17 at 12:12
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How to grep for two words existing on the same line? [duplicate]
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Prescription
One simple rewrite of the command in the question is:
grep "word1" logs | grep "word2"
The first grep finds lines with 'word1' from the file 'logs' and then feeds those into the second grep which looks for lines containing...
How to remove all null elements from a ArrayList or String Array?
...ll));
Read the Java API. The code will throw java.lang.UnsupportedOperationException for immutable lists (such as created with Arrays.asList); see this answer for more details.
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How to implement Enums in Ruby?
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I'm surprised that no one has offered something like the following (harvested from the RAPI gem):
class Enum
private
def self.enum_attr(name, num)
name = name.to_s
define_method(name + '?') do
@attrs & num != 0
end
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C# - Multiple generic types in one list
...nor does it prevent a developer from shooting themselves in the foot by erroneously adding some non-MetaData object to the list. By using a List<MetaData> it is understood what the list should contain. Most likely MetaData will have some public properties/methods that haven't been shown in th...
Is there a typical state machine implementation pattern?
... Very nice way to get started, at least beginning point for me. One remark, the first line of run_state() has a naughty "." that shouldn't be there.
– Atilla Filiz
Jun 22 '10 at 14:29
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