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NEWS

• Additional audo_set_headers to function filearray_load_or_create to avoid automatically setting headers, with default being TRUE for compatibility concerns

• Fixed CRAN check issue brought by testthat update, which requires bit64 when checking int64 arrays. Added bit64 to Suggests field to mitigate this check error

• Fixed a bug where C++ errors are not correctly thrown due to a recent Rcpp update. This bug may cause erroneous code to execute ignoring try-catch statement and imbalanced protecting stacks (fwhich, mapreduce)

• Removed non-API R C interface
• Allows subsetAssign to assign when value length is 1 (thanks @talegari issue #9)
• Allows more flexible fwhich function with functional val input and options to include corresponding values as part of return (thanks @talegari issue #10)
• Fixed mapreduce bug when partition length is way larger than the buffer size, causing buffer to stop updating
• Fixed other C++ issues, such as unused buffer allocation in subset-assign, and min_ offset in sub_vec_range. These issues are not considered bugs since they don’t affect the results, but the performance is slightly increased after fix.
• Replaced dipsaus with more updated ravetools in the vignette performance profiling
• Updated examples to get rid of warning messages and out-dated arguments.

• Removed c++11 from system requirement and Makevars
• Used TinyThreads instead of OpenMP to get parallel working on OSX
• Added as_filearray method, and support optional float
• Added array proxy class, allowing arrays to lazy-evaluate simple operators
• Allows user-defined temporary file array path
• Fixed fmap issues, using better guesses for default .input_size
• Fixed a memory bug caused when partition margin has elements greater than 1 and when FARR_subset_sequential is used
• Used fastmap to avoid environment look-up
• fa_eval_ops allows dimension names
• Larger default buffer size to allow 2^20 in single partition
• Disabled single indexing
• Fixed endian issue on big-endian platforms

• Fixed a bug when trying to read array data sequentially. The bug is caused by buffer size being greater than the array length, making in a pointer that controls the partition number exceed the end of vector, resulting in undefined behavior. The functions affected are: fmap, fmap2. The bug has been fixed and passed valgrind memory check.

• Fixed a bug when allocated memory is one byte short than requested. The bug would crash R when triggered in certain cases.
• Removed limit to the maximum number of partitions when writing. The previous implementation creates and opens related file descriptors all at once before writing. This setup will raise errors when the number of connections reach to certain limit, often defined by the operating systems. This update only opens the connection on demand. The performance might be impacted when writing to disk, but in return, the program will be more robust
• Fixed subset function environment not resolved correctly when using formula
• Added filearray_load_or_create as an alternative to filearray_checkload by automatically replace existing obsolete array files if the headers, dimensions, or data types don’t match. Also on_missing argument is provided to allow array initialization if new array is created.

• Automatically detect whether symbolic-link works and show warnings
• Warnings can be suppressed
• Allow extra headers to be set in meta file
• Added header signature method
• Fixed symbolic-link issues on Windows when partition sizes are 0
• Added check-load function filearray_checkload to validate header
• Fixed collapse method when dimnames are set
• Fixed an unprotected variable in C++ code
• filearray_bind can use cache if the header signatures agree
• filearray_bind can choose to force overwrite
• Added package digest to Imports
• Fixed a typo and several small bugs

• Removed flush in saving data to let system decide when to flush to hard drive
• Allowed array to expand along the partition margin
• Fixed dimension name getting dropped under certain situations
• Use 2 cores by default when R CMD check is detected

• Added OpenMP flag in the MakeVars
• Fixed critical bugs that could cause segfaults
• Can store complex and float data types
• Re-implemented read/write functions to use memory map
• Allowed dimnames to be set
• Added generics subset to subset using dimnames
• Added vignette to compare performance
• Added speed comparisons in README.md
• Added collapse to calculate marginal summation with little memory overhead
• Added fmap, fmap2 to apply functions to one or multiple file arrays with little memory overhead (also very fast)
• Fixed ‘unprotected’ issues warned by rchk

• Added a NEWS.md file to track changes to the package.
• Initial implementation

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