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Question

Is it a good practice to instantiate a HashSet from an IEnumerable before using Contains()?

score 209 · Answer 1 · 2023-08-03T16:56:05.467000

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Is it a good practice to instantiate a HashSet from an IEnumerable before using Contains()?

209 views Asked by Amessihel At 03 August 2023 at 16:56

score 93 · Answer 2 · 2023-07-06T10:07:07.883000

Does wrapping lock into scope change when lock will be released?

93 views Asked by Ivan Ivanyuk At 06 July 2023 at 10:07

score 131 · Answer 3 · 2023-07-03T05:24:55.340000

Is it worth moving `let` out of loop?

131 views Asked by AudioBubble At 03 July 2023 at 05:24

score 166 · Answer 4 · 2023-02-16T04:49:55.260000

Can I cache getClass.hashCode()?

166 views Asked by Jin Kwon At 16 February 2023 at 04:49

score 41 · Answer 5 · 2022-11-28T14:23:16.407000

All possible Combinations for this set of letternumbers

41 views Asked by Punit Patel At 28 November 2022 at 14:23

score 48 · Answer 6 · 2021-08-31T16:01:27.747000

Is there an example where using React.memo/PureComponent has worse performance than not using it?

48 views Asked by syimyuzya At 31 August 2021 at 16:01

score 174 · Answer 7 · 2021-08-09T06:52:30.273000

Narrow scope of a variable and performance?

174 views Asked by Jin Kwon At 09 August 2021 at 06:52

score 44 · Answer 8 · 2020-02-07T16:08:36.000000

Object dynamic constness

44 views Asked by Black At 07 February 2020 at 16:08

score 2246 · Answer 9 · 2020-01-13T14:19:22.727000

Impact of Java streams from GC perspective or handling short-lived objects by the GC

2.2k views Asked by Aliaksandr Kazlou At 13 January 2020 at 14:19

score 2348 · Answer 10 · 2019-07-13T10:17:14.753000

C++: Performance impact of if inside loops

2.3k views Asked by Seriously At 13 July 2019 at 10:17

score 1692 · Answer 11 · 2019-03-14T17:35:38.803000

Should I minimize the usage of db_session in Pony ORM? What is the purpose of db_session?

1.6k views Asked by Elijas Dapšauskas At 14 March 2019 at 17:35

score 2434 · Answer 12 · 2017-11-28T17:15:25.060000

How expensive is the new Gson() constructor in production?

2.4k views Asked by Bob Cross At 28 November 2017 at 17:15

score 118 · Answer 13 · 2017-04-04T15:48:38.810000

perl string catenation and substitution in a single line?

118 views Asked by Medievalist At 04 April 2017 at 15:48

score 1688 · Answer 14 · 2016-07-27T09:25:33.067000

Take(10) vs TOP 10 With SqlDataReader?

1.6k views Asked by BornToCode At 27 July 2016 at 09:25

score 913 · Answer 15 · 2016-07-15T05:49:27.557000

Efficiently taking the absolute value of an integer vector in C

913 views Asked by oink At 15 July 2016 at 05:49

score 119 · Answer 16 · 2015-10-20T22:00:22.930000

Possible redundant object creation with Optional#ofNullable?

119 views Asked by Jin Kwon At 20 October 2015 at 22:00

score 1505 · Answer 17 · 2015-05-22T10:57:45.377000

In C++, which is better i>-1 or i>=0

1.5k views Asked by Yogesh At 22 May 2015 at 10:57

score 584 · Answer 18 · 2014-12-12T14:25:54.813000

Fragmentation in SQLite used in a round-robin fashion without VACUUM

584 views Asked by Calpau At 12 December 2014 at 14:25

score 3329 · Answer 19 · 2014-11-08T00:21:05.640000

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3.3k views Asked by Calpau At 08 November 2014 at 00:21

score 197 · Answer 20 · 2014-05-28T17:39:27.207000

How to optimize a statement of the form "if (A == B) { ...} else if (A < B) {...} else { ....}"

197 views Asked by Donald Knuth At 28 May 2014 at 17:39

TechQA.

List Question

Is it a good practice to instantiate a HashSet from an IEnumerable before using Contains()?

Does wrapping lock into scope change when lock will be released?

Is it worth moving `let` out of loop?

Can I cache getClass.hashCode()?

All possible Combinations for this set of letternumbers

Is there an example where using React.memo/PureComponent has worse performance than not using it?

Narrow scope of a variable and performance?

Object dynamic constness

Impact of Java streams from GC perspective or handling short-lived objects by the GC

C++: Performance impact of if inside loops

Should I minimize the usage of db_session in Pony ORM? What is the purpose of db_session?

How expensive is the new Gson() constructor in production?

perl string catenation and substitution in a single line?

Take(10) vs TOP 10 With SqlDataReader?

Efficiently taking the absolute value of an integer vector in C

Possible redundant object creation with Optional#ofNullable?

In C++, which is better i>-1 or i>=0

Fragmentation in SQLite used in a round-robin fashion without VACUUM

SQLite vacuuming / fragmentation and performance degradation

How to optimize a statement of the form "if (A == B) { ...} else if (A < B) {...} else { ....}"

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