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What are the differences between a HashMap and a Hashtable in Java?
...es is LinkedHashMap, so in the event that you'd want predictable iteration order (which is insertion order by default), you could easily swap out the HashMap for a LinkedHashMap. This wouldn't be as easy if you were using Hashtable.
Since synchronization is not an issue for you, I'd recommend Has...
Quickly reading very large tables as dataframes
...e end object is a data frame. So you have to convert it to a zoo object in order to use it with zoo. Look at the examples in the zoo docs for illustrations.
– JD Long
Apr 2 '13 at 12:48
...
Is it possible to view RabbitMQ message contents directly from the command line?
...RabbitMQ queue to local files and requeuing the messages in their original order.
Example usage (to dump the first 50 messages of queue incoming_1):
rabbitmq-dump-queue -url="amqp://user:password@rabbitmq.example.com:5672/" -queue=incoming_1 -max-messages=50 -output-dir=/tmp
...
Convert Elixir string to integer or float
...ust be the string representation of a float including a decimal point. In order to parse a string without decimal point as a float then Float.parse/1 should be used. Otherwise, an ArgumentError will be raised.
But Float.parse returns a tuple of 2 elements, not the number you want, so put it into p...
Forward declaration of a typedef in C++
...orward declaration can be made if we only need to know the type exists, in order to create pointers or references to the type. Since the OP didn't show code, but complained it wouldn't compile, I assumed (probably correctly) that the OP was trying to use the type, not just refer to it.
...
Loop through all nested dictionary values?
...he first benefit. Also, this version can be adapted to different traversal orders quite easily by replacing the stack (a list) by a deque or even a priority queue.
– Fred Foo
May 25 '12 at 15:30
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How to measure time in milliseconds using ANSI C?
...ng that timeval::tv_usec is always under one second, it's looping. I.e. in order to take differences of time larger than 1 sec, you should: long usec_diff = (e.tv_sec - s.tv_sec)*1000000 + (e.tv_usec - s.tv_usec);
– Alexander Malakhov
Oct 15 '12 at 4:06
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Get record counts for all tables in MySQL database
...
add "select * from (" at beginning and ") as output order by exact_row_count desc" at the end of generated query after removing last UNION to get order by table count desc
– Raghavendra
Jun 22 '18 at 5:42
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UILabel sizeToFit doesn't work with autolayout ios6
...ght constraint, it can make break the constraint to make itself smaller in order to hug the content (if you have a single line for example), but it cannot break the constraint to make it larger.
Convert a list of data frames into one data frame
...data.frame(data.table::rbindlist(listOfDataFrames)),
replications = 100, order = "relative",
columns=c('test','replications', 'elapsed','relative')
)
test replications elapsed relative
4 data.table_rbindlist 100 0.11 1.000
1 do.call ...