Add tap operator

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BENCHMARK RESULTS (AUTOGENERATED)

ci-ubuntu-gcc

General

name	rxcpp	rpp	prev rpp	ratio
Subscribe empty callbacks to empty observable	300.44 ns	2.16 ns	2.16 ns	1.00
Subscribe empty callbacks to empty observable via pipe operator	301.87 ns	2.16 ns	2.16 ns	1.00

Sources

name	rxcpp	rpp	prev rpp	ratio
from array of 1 - create + subscribe + immediate	687.06 ns	0.31 ns	0.31 ns	1.00
from array of 1 - create + subscribe + current_thread	1032.82 ns	5.24 ns	5.25 ns	1.00
concat_as_source of just(1 immediate) create + subscribe	2266.32 ns	116.22 ns	111.14 ns	1.05
defer from array of 1 - defer + create + subscribe + immediate	797.56 ns	0.31 ns	0.31 ns	1.00
interval - interval + take(3) + subscribe + immediate	2145.37 ns	58.00 ns	58.00 ns	1.00
interval - interval + take(3) + subscribe + current_thread	3107.58 ns	32.10 ns	32.11 ns	1.00

Filtering Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take(1)+subscribe	1072.98 ns	0.31 ns	0.31 ns	1.00
immediate_just+filter(true)+subscribe	842.63 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,2)+skip(1)+subscribe	987.33 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,1,2)+distinct_until_changed()+subscribe	848.27 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,2)+first()+subscribe	1272.79 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,2)+last()+subscribe	921.99 ns	0.31 ns	0.31 ns	1.00
immediate_just+take_last(1)+subscribe	1102.83 ns	18.82 ns	18.54 ns	1.01

Schedulers

name	rxcpp	rpp	prev rpp	ratio
immediate scheduler create worker + schedule	261.63 ns	2.16 ns	2.16 ns	1.00
current_thread scheduler create worker + schedule	370.40 ns	7.10 ns	7.10 ns	1.00
current_thread scheduler create worker + schedule + recursive schedule	822.45 ns	63.64 ns	64.51 ns	0.99

Transforming Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+map(v*2)+subscribe	870.77 ns	0.31 ns	0.31 ns	1.00
immediate_just+scan(10, std::plus)+subscribe	885.17 ns	0.31 ns	0.31 ns	1.00
immediate_just+flat_map(immediate_just(v*2))+subscribe	2341.82 ns	159.59 ns	200.45 ns	0.80
immediate_just+buffer(2)+subscribe	1590.69 ns	14.50 ns	14.20 ns	1.02
immediate_just+window(2)+subscribe + subscsribe inner	2353.30 ns	971.94 ns	1034.64 ns	0.94

Conditional Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take_while(false)+subscribe	832.29 ns	-	-	0.00
immediate_just+take_while(true)+subscribe	906.55 ns	0.31 ns	0.31 ns	1.00

Utility Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(1)+subscribe_on(immediate)+subscribe	1990.50 ns	0.31 ns	0.31 ns	1.00

Combining Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(immediate_just(1), immediate_just(1)) + merge() + subscribe	3388.25 ns	192.24 ns	180.23 ns	1.07
immediate_just(1) + merge_with(immediate_just(2)) + subscribe	3705.16 ns	163.37 ns	178.75 ns	0.91
immediate_just(1) + with_latest_from(immediate_just(2)) + subscribe	-	136.83 ns	163.58 ns	0.84
immediate_just(immediate_just(1),immediate_just(1)) + switch_on_next() + subscribe	3547.10 ns	1297.10 ns	1235.97 ns	1.05

Subjects

name	rxcpp	rpp	prev rpp	ratio
publish_subject with 1 observer - on_next	34.55 ns	11.72 ns	12.02 ns	0.98

Scenarios

name	rxcpp	rpp	prev rpp	ratio
basic sample	1396.00 ns	14.19 ns	14.20 ns	1.00
basic sample with immediate scheduler	1366.69 ns	5.55 ns	5.55 ns	1.00

Aggregating Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+reduce(10, std::plus)+subscribe	898.68 ns	0.31 ns	0.31 ns	1.00

ci-macos

General

name	rxcpp	rpp	prev rpp	ratio
Subscribe empty callbacks to empty observable	1117.14 ns	5.44 ns	4.33 ns	1.26
Subscribe empty callbacks to empty observable via pipe operator	1059.43 ns	5.40 ns	4.24 ns	1.27

Sources

name	rxcpp	rpp	prev rpp	ratio
from array of 1 - create + subscribe + immediate	2202.13 ns	0.44 ns	0.26 ns	1.69
from array of 1 - create + subscribe + current_thread	2773.21 ns	8.89 ns	28.33 ns	0.31
concat_as_source of just(1 immediate) create + subscribe	6578.08 ns	394.73 ns	364.19 ns	1.08
defer from array of 1 - defer + create + subscribe + immediate	2303.63 ns	0.28 ns	0.26 ns	1.07
interval - interval + take(3) + subscribe + immediate	6190.24 ns	91.44 ns	125.01 ns	0.73
interval - interval + take(3) + subscribe + current_thread	7473.69 ns	60.87 ns	118.18 ns	0.52

Filtering Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take(1)+subscribe	3338.82 ns	0.28 ns	0.60 ns	0.46
immediate_just+filter(true)+subscribe	2481.72 ns	0.28 ns	0.34 ns	0.82
immediate_just(1,2)+skip(1)+subscribe	3410.19 ns	0.28 ns	0.26 ns	1.07
immediate_just(1,1,2)+distinct_until_changed()+subscribe	2478.54 ns	0.56 ns	0.73 ns	0.76
immediate_just(1,2)+first()+subscribe	3839.63 ns	0.28 ns	0.47 ns	0.59
immediate_just(1,2)+last()+subscribe	2962.11 ns	0.28 ns	0.57 ns	0.49
immediate_just+take_last(1)+subscribe	3514.98 ns	70.57 ns	155.29 ns	0.45

Schedulers

name	rxcpp	rpp	prev rpp	ratio
immediate scheduler create worker + schedule	990.37 ns	5.75 ns	4.48 ns	1.28
current_thread scheduler create worker + schedule	1293.44 ns	15.07 ns	42.47 ns	0.35
current_thread scheduler create worker + schedule + recursive schedule	2269.51 ns	156.89 ns	262.09 ns	0.60

Transforming Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+map(v*2)+subscribe	2460.83 ns	0.28 ns	0.29 ns	0.97
immediate_just+scan(10, std::plus)+subscribe	2777.03 ns	0.56 ns	0.66 ns	0.85
immediate_just+flat_map(immediate_just(v*2))+subscribe	6407.68 ns	462.56 ns	467.72 ns	0.99
immediate_just+buffer(2)+subscribe	2930.45 ns	69.51 ns	131.00 ns	0.53
immediate_just+window(2)+subscribe + subscsribe inner	6539.89 ns	2597.91 ns	3052.35 ns	0.85

Conditional Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take_while(false)+subscribe	2459.84 ns	-	-	0.00
immediate_just+take_while(true)+subscribe	2477.00 ns	0.28 ns	0.50 ns	0.55

Utility Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(1)+subscribe_on(immediate)+subscribe	5989.58 ns	0.28 ns	0.54 ns	0.52

Combining Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(immediate_just(1), immediate_just(1)) + merge() + subscribe	9012.33 ns	514.65 ns	810.28 ns	0.64
immediate_just(1) + merge_with(immediate_just(2)) + subscribe	10173.15 ns	524.89 ns	798.07 ns	0.66
immediate_just(1) + with_latest_from(immediate_just(2)) + subscribe	-	517.67 ns	551.18 ns	0.94
immediate_just(immediate_just(1),immediate_just(1)) + switch_on_next() + subscribe	9852.62 ns	2354.47 ns	2246.14 ns	1.05

Subjects

name	rxcpp	rpp	prev rpp	ratio
publish_subject with 1 observer - on_next	100.32 ns	62.05 ns	57.00 ns	1.09

Scenarios

name	rxcpp	rpp	prev rpp	ratio
basic sample	3371.66 ns	45.01 ns	161.92 ns	0.28
basic sample with immediate scheduler	3352.96 ns	5.84 ns	16.80 ns	0.35

Aggregating Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+reduce(10, std::plus)+subscribe	2820.81 ns	0.28 ns	0.28 ns	0.98

ci-ubuntu-clang

General

name	rxcpp	rpp	prev rpp	ratio
Subscribe empty callbacks to empty observable	267.76 ns	0.88 ns	1.54 ns	0.57
Subscribe empty callbacks to empty observable via pipe operator	265.87 ns	0.88 ns	1.54 ns	0.57

Sources

name	rxcpp	rpp	prev rpp	ratio
from array of 1 - create + subscribe + immediate	565.81 ns	0.31 ns	0.31 ns	1.00
from array of 1 - create + subscribe + current_thread	792.51 ns	5.55 ns	5.56 ns	1.00
concat_as_source of just(1 immediate) create + subscribe	1920.94 ns	112.48 ns	112.23 ns	1.00
defer from array of 1 - defer + create + subscribe + immediate	589.60 ns	0.31 ns	0.31 ns	1.00
interval - interval + take(3) + subscribe + immediate	1545.44 ns	57.11 ns	57.09 ns	1.00
interval - interval + take(3) + subscribe + current_thread	2113.50 ns	30.86 ns	30.88 ns	1.00

Filtering Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take(1)+subscribe	932.08 ns	0.31 ns	0.31 ns	1.00
immediate_just+filter(true)+subscribe	678.77 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,2)+skip(1)+subscribe	849.90 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,1,2)+distinct_until_changed()+subscribe	698.29 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,2)+first()+subscribe	1111.80 ns	0.31 ns	0.31 ns	1.00
immediate_just(1,2)+last()+subscribe	751.55 ns	0.31 ns	0.31 ns	1.00
immediate_just+take_last(1)+subscribe	964.25 ns	0.31 ns	0.31 ns	1.00

Schedulers

name	rxcpp	rpp	prev rpp	ratio
immediate scheduler create worker + schedule	197.78 ns	0.88 ns	1.54 ns	0.57
current_thread scheduler create worker + schedule	312.62 ns	5.58 ns	5.58 ns	1.00
current_thread scheduler create worker + schedule + recursive schedule	632.32 ns	60.40 ns	58.47 ns	1.03

Transforming Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+map(v*2)+subscribe	687.75 ns	0.31 ns	0.31 ns	1.00
immediate_just+scan(10, std::plus)+subscribe	716.83 ns	0.31 ns	0.31 ns	1.00
immediate_just+flat_map(immediate_just(v*2))+subscribe	1821.78 ns	119.03 ns	119.07 ns	1.00
immediate_just+buffer(2)+subscribe	1395.10 ns	14.19 ns	15.12 ns	0.94
immediate_just+window(2)+subscribe + subscsribe inner	2157.25 ns	755.64 ns	753.66 ns	1.00

Conditional Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take_while(false)+subscribe	649.58 ns	-	-	0.00
immediate_just+take_while(true)+subscribe	677.30 ns	0.31 ns	0.31 ns	1.00

Utility Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(1)+subscribe_on(immediate)+subscribe	1649.22 ns	0.31 ns	0.31 ns	1.00

Combining Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(immediate_just(1), immediate_just(1)) + merge() + subscribe	2566.63 ns	126.05 ns	124.50 ns	1.01
immediate_just(1) + merge_with(immediate_just(2)) + subscribe	3126.73 ns	121.51 ns	121.07 ns	1.00
immediate_just(1) + with_latest_from(immediate_just(2)) + subscribe	-	112.99 ns	112.26 ns	1.01
immediate_just(immediate_just(1),immediate_just(1)) + switch_on_next() + subscribe	2784.38 ns	724.99 ns	741.59 ns	0.98

Subjects

name	rxcpp	rpp	prev rpp	ratio
publish_subject with 1 observer - on_next	26.16 ns	12.96 ns	13.59 ns	0.95

Scenarios

name	rxcpp	rpp	prev rpp	ratio
basic sample	1057.64 ns	14.20 ns	14.19 ns	1.00
basic sample with immediate scheduler	1035.88 ns	6.17 ns	6.17 ns	1.00

Aggregating Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+reduce(10, std::plus)+subscribe	750.84 ns	0.31 ns	0.31 ns	1.00

ci-windows

General

name	rxcpp	rpp	prev rpp	ratio
Subscribe empty callbacks to empty observable	580.46 ns	4.94 ns	4.95 ns	1.00
Subscribe empty callbacks to empty observable via pipe operator	589.57 ns	4.94 ns	4.13 ns	1.20

Sources

name	rxcpp	rpp	prev rpp	ratio
from array of 1 - create + subscribe + immediate	1181.11 ns	4.93 ns	4.93 ns	1.00
from array of 1 - create + subscribe + current_thread	1441.94 ns	20.40 ns	20.39 ns	1.00
concat_as_source of just(1 immediate) create + subscribe	4677.65 ns	173.06 ns	172.32 ns	1.00
defer from array of 1 - defer + create + subscribe + immediate	1218.88 ns	4.93 ns	4.93 ns	1.00
interval - interval + take(3) + subscribe + immediate	3156.48 ns	131.82 ns	129.68 ns	1.02
interval - interval + take(3) + subscribe + current_thread	3483.93 ns	59.52 ns	60.75 ns	0.98

Filtering Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take(1)+subscribe	1887.31 ns	12.87 ns	12.88 ns	1.00
immediate_just+filter(true)+subscribe	1333.96 ns	12.39 ns	12.40 ns	1.00
immediate_just(1,2)+skip(1)+subscribe	1784.32 ns	13.06 ns	13.06 ns	1.00
immediate_just(1,1,2)+distinct_until_changed()+subscribe	1371.94 ns	15.80 ns	15.94 ns	0.99
immediate_just(1,2)+first()+subscribe	2110.29 ns	12.64 ns	12.96 ns	0.97
immediate_just(1,2)+last()+subscribe	1488.95 ns	14.09 ns	14.14 ns	1.00
immediate_just+take_last(1)+subscribe	2063.65 ns	59.86 ns	59.14 ns	1.01

Schedulers

name	rxcpp	rpp	prev rpp	ratio
immediate scheduler create worker + schedule	486.87 ns	7.07 ns	7.29 ns	0.97
current_thread scheduler create worker + schedule	667.20 ns	17.59 ns	17.83 ns	0.99
current_thread scheduler create worker + schedule + recursive schedule	1099.91 ns	109.74 ns	110.15 ns	1.00

Transforming Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+map(v*2)+subscribe	1338.80 ns	12.31 ns	12.32 ns	1.00
immediate_just+scan(10, std::plus)+subscribe	1447.72 ns	21.58 ns	21.27 ns	1.01
immediate_just+flat_map(immediate_just(v*2))+subscribe	3921.28 ns	233.16 ns	226.16 ns	1.03
immediate_just+buffer(2)+subscribe	2337.00 ns	61.19 ns	60.87 ns	1.01
immediate_just+window(2)+subscribe + subscsribe inner	4105.00 ns	1138.39 ns	1141.39 ns	1.00

Conditional Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+take_while(false)+subscribe	1350.28 ns	11.49 ns	11.47 ns	1.00
immediate_just+take_while(true)+subscribe	1341.58 ns	12.37 ns	12.37 ns	1.00

Utility Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(1)+subscribe_on(immediate)+subscribe	3196.59 ns	7.40 ns	7.40 ns	1.00

Combining Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just(immediate_just(1), immediate_just(1)) + merge() + subscribe	5217.35 ns	243.59 ns	243.44 ns	1.00
immediate_just(1) + merge_with(immediate_just(2)) + subscribe	6595.68 ns	239.23 ns	239.94 ns	1.00
immediate_just(1) + with_latest_from(immediate_just(2)) + subscribe	-	226.87 ns	221.33 ns	1.03
immediate_just(immediate_just(1),immediate_just(1)) + switch_on_next() + subscribe	5894.21 ns	948.62 ns	957.06 ns	0.99

Subjects

name	rxcpp	rpp	prev rpp	ratio
publish_subject with 1 observer - on_next	36.25 ns	25.28 ns	25.28 ns	1.00

Scenarios

name	rxcpp	rpp	prev rpp	ratio
basic sample	1902.18 ns	59.61 ns	59.05 ns	1.01
basic sample with immediate scheduler	1901.12 ns	37.03 ns	37.03 ns	1.00

Aggregating Operators

name	rxcpp	rpp	prev rpp	ratio
immediate_just+reduce(10, std::plus)+subscribe	1455.48 ns	19.97 ns	19.97 ns	1.00

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (721b469) 95.53% compared to head (5b39ceb) 94.61%.
Report is 3 commits behind head on v2.

Additional details and impacted files

@@            Coverage Diff             @@
##               v2     #521      +/-   ##
==========================================
- Coverage   95.53%   94.61%   -0.92%     
==========================================
  Files          80       82       +2     
  Lines        2105     1524     -581     
==========================================
- Hits         2011     1442     -569     
+ Misses         94       82      -12     

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[sonarcloud]

Quality Gate passed

Issues
1 New issue

Measures
0 Security Hotspots
51.6% Coverage on New Code
0.7% Duplication on New Code

See analysis details on SonarCloud