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How to split a string literal across multiple lines in C / Objective-C?
...ocumenting the optionality of the second @?
– Heath Borders
Jun 5 '12 at 18:10
@HeathBorders: Not right here, but I've...
Correct way to write loops for promise.
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I don't think it guarantees the order of calling logger.log(res);
Actually, it does. That statement is executed before the resolve call.
Any suggestions?
Lots. The most important is your use of the create-promise-manually antipattern - just do only...
What does ** (double star/asterisk) and * (star/asterisk) do for parameters?
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The output of [6] is in reverse order. name one age 27
– thanos.a
Jan 8 '17 at 21:11
61
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Why not inherit from List?
...of historical facts such as when a player was recruited, injured, retired, etc. Obviously the current player roster is an important fact that should probably be front-and-center, but there may be other interesting things you want to do with this object that require a more historical perspective.
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
...spl_autoload_register() with anonymous function rule just after 1st one in order o manually include missing parent / inherited classes.
– stamster
Jul 27 '17 at 21:54
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What are the use cases of Graph-based Databases (http://neo4j.org/)? [closed]
...hs). I've been playing around with neo4j, and my lookup times are several orders of magnitude faster when I need this kind of lookup.
Second, to the point that graph databases are outdated. Um...no. Early on, as people were trying to figure out how to store and lookup data efficiently, they crea...
What's the right way to pass form element state to sibling/parent elements?
...ues" or you're passing the state of some data in the child component up in order to update the state. You changed the state in C1, and you want C2 to be aware of it, so, by updating the state in the Root component and re-rendering, C2's props are now in sync since the state was updated in the Root c...
How to make --no-ri --no-rdoc the default for gem install?
... Anyway to make this a system wide default without editing /etc/skel and every user's home directory?
– Hackeron
Jan 13 '11 at 3:43
42
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How to select the rows with maximum values in each group with dplyr? [duplicate]
...g of A and B values.
group_by( A, B) %>%
# Sort rows in descending order by "value" column.
arrange( desc(value) ) %>%
# Pick the top 1 value
slice(1) %>%
# Remember to ungroup in case you want to do further work without grouping.
ungroup()
# Answering an extension of the ...
The relationship could not be changed because one or more of the foreign-key properties is non-nulla
...oesn't make sense to have comments for a post that doesn't exist. Same for orders and order items.
In aggregation, the child object can exist irrespective of its parent. If the parent is destroyed, the child object can still exist, as it may be added to a different parent later. e.g.: the relations...