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How to append rows to an R data frame
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Not knowing what you are trying to do, I'll share one more suggestion: Preallocate vectors of the type you want for each column, insert values into those vectors, and then, at the end, create your data.frame.
Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, def...
What's the best Django search app? [closed]
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Haystack has been badly, if at all, supported for quite some time. I recommend you avoid it at this point. Maybe they will fix it in the future but its in a bad place now.
– Aaron Schif
Jul 31 '13 at 15:21
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How can I make robocopy silent in the command line except for progress?
...t I'd like it to only show the progress percentage while it copies and not all of the other information.
8 Answers
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Favourite performance tuning tricks [closed]
...les (possibly archive the deleted records)
Consider doing this automatically once a day or once a week.
Rebuild Indexes
Rebuild Tables (bcp data out/in)
Dump / Reload the database (drastic, but might fix corruption)
Build new, more appropriate index
Run DBCC to see if there is possible corru...
calculating the difference in months between two dates
...or is it more related to an actual span of time? The logic for determining all of these rules is non-trivial, so you'll have to determine your own and implement the appropriate algorithm.
If all you want is simply a difference in the months--completely disregarding the date values--then you can use...
Creating a system overlay window (always on top)
...ng to create an always-op-top button/clickable-image
which stays on top of all the windows all the time.
16 Answers
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How do I move an existing Git submodule within a Git repository?
... Since git 1.8.5, git mv old/submod new/submod works as expected and does all the plumbing for you. You might want to use git 1.9.3 or newer, because it includes fixes for submodule moving.
The process is similar to how you'd remove a submodule (see How do I remove a submodule?):
Edit .gitmod...
Efficiency of purely functional programming
...ssible asymptotic slowdown that can happen when programming purely functionally as opposed to imperatively (i.e. allowing side-effects)?
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Copy rows from one Datatable to another DataTable?
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Though your answer technically is correct, your code sample doesn't address your assumptions. The answer by @RageeshGr handles all the assumptions and IMHO is written more concisely and is less error prone.
– chris.nesbit1
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Are there best practices for (Java) package organization? [closed]
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Package organization or package structuring is usually a heated discussion. Below are some simple guidelines for package naming and structuring:
Follow java package naming conventions
Structure your packages according to their functional role as well as their business role...