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Leaf: shows the last frame on the stack.
Callchain: performs a complete stack dump.
Lua
Introduced the new method ``table.equals``. It compares two tables by value and respects the ``__eq`` metamethod.
Added support of console autocompletion for ``net.box`` objects ``stream`` and ``future`` (:tarantool-issue:`6305`).
Added the ``box.runtime.info().tuple`` metric to track the amount of memory occupied by tuples allocated on runtime arena (:tarantool-issue:`5872`).
It does not count tuples that arrive from memtx or vinyl but counts tuples created on-the-fly: say, using ``box.tuple.new(<...>)``.
Datetime
Added a new built-in module ``datetime.lua`` that allows operating timestamps and intervals values (:tarantool-issue:`5941`).
Added the method to allow converting string literals in extended iso-8601 or rfc3339 formats (:tarantool-issue:`6731`).
Extended the range of supported years in all parsers to cover fully -5879610-06-22..5879611-07-11 (:tarantool-issue:`6731`).
Datetime interval support has been reimplemented in C to make possible future Olson/tzdata and SQL extensions (:tarantool-issue:`6923`).
Now all components of the interval values are kept and operated separately (years, months, weeks, days, hours, seconds, and nanoseconds). This allows applying date/time arithmetic correctly when we add/subtract intervals to datetime values.
Extended datetime literal parser with the ability to handle known timezone abbreviations (‘MSK’, ‘CET’, etc.) which are deterministically translated to their offset (:tarantool-issue:`5941`, :tarantool-issue:`6751`).
Timezone abbreviations can be used in addition to the timezone offset in the datetime literals. For example, these literals produce equivalent datetime values:
local date = require('datetime')
local d1 = date.parse('2000-01-01T02:00:00+0300')
local d2 = date.parse('2000-01-01T02:00:00 MSK')
local d3 = date.parse('2000-01-01T02:00:00 MSK', {format = '%FT%T %Z'})
Parser fails if one uses ambiguous names (for example, ‘AT’) which could not be directly translated into timezone offsets.
Enabled support for timezone names in the constructor and ``date:set{}`` modifier via ``tz`` attribute. Currently, only timezone name abbreviations are supported (:tarantool-issue:`7076`).
Timezone abbreviations can be used in addition to the timezone offset. They can be used during constructing or modifying a date object, or while parsing datetime literals. Numeric time offsets and named abbreviations produce equivalent datetime values:
local date = require('datetime')
local d2 = date.parse('2000-01-01T02:00:00 MSK')

local d1 = date.new{year = 1980, tz = 'MSK'}
d2 = date.new{year = 1980, tzoffset = 180}
d2:set{tz = 'MSK'}
Note that the timezone name parser fails if one uses ambiguous names, which could not be translated into timezone offsets directly (for example, ‘AT’).
Digest
Introduced new hash types in digest module -- ``xxhash32`` and ``xxhash64`` (:tarantool-issue:`2003`).
Fiber
Introduced ``fiber_object:info()`` to get ``info`` from fiber. Works as ``require('fiber').info()`` but only for one fiber.
Introduced ``fiber_object:csw()`` to get ``csw`` from fiber (:tarantool-issue:`5799`).
Changed ``fiber.info()`` to hide backtraces of idle fibers (:tarantool-issue:`4235`).
Improved fiber ``fiber.self()``, ``fiber.id()`` and ``fiber.find()`` performance by 2-3 times.
Log
Implemented support of symbolic log levels representation in ``log`` module (:tarantool-issue:`5882`). Now it is possible to specify levels the same way as in ``box.cfg{}`` call.
For example, instead of

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testing_project / Documentation: release/2.10.0 — English

local date = require('datetime')
local d1 = date.parse('2000-01-01T02:00:00+0300')
local d2 = date.parse('2000-01-01T02:00:00 MSK')
local d3 = date.parse('2000-01-01T02:00:00 MSK', {format = '%FT%T %Z'})
a year ago
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python-format, read-only
String age
a year ago
Last updated
a year ago
Source string age
a year ago
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string 115