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the order in which result of a set is printed in Python

I'm new to Python. I've a question. Some one could help me. I do the following in the command prompt: >>> a=set() > ... 2,7), (3,7), ... Thanks! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the problem about different treatment to __VA_ARGS__ when using VS 2008 and GCC

I am trying to identify a problem because of an unusual usage of variadic macros. Here is the hypothetic ... falls into an undefined behavior? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the spark.yarn.driver.memoryOverhead or spark.yarn.executor.memoryOverhead is used to store what kind of data?

I wondered that : spark use the spark.yarn.driver.memoryOverhead or spark.yarn.executor.memoryOverhead to ... .yarn.executor.memoryOverhead? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the correct regex for replacing em-dash with a basic "-" in java

My question concerns the replaceAll method of String class. My purpose is to replace all the em-dashes in a text with ... is it I'm doing wrong? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the difference between comma and join in sql

what is the difference between using comma or join between two different tables. such as these two codes: SELECT ... FROM student JOIN tutor; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the reason: python string assignments accidentally change '' into 'x08' and 'a' into 'x07', why Python did this?

Had two answers and some comments, mentioned another question, but all had not provided REASON, why Python did ... be appropriated. Many thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the same regex but different results on Linux and Windows only C++

I have this pattern for my command-line program: ^s?([/|@#])(?:(?!1).)+1(?:(?!1).)*1(?:(?:gi?|ig)?(?: ... " ); } else { console.log( "no" ); } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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586 views

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the timing of String Literal loaded into StringTable in Java HotSpot vm

The Question came out when i was learning java.lang.String Java API. I found an article in Chinese. Java 中new String( ... but not c++. Thanks.! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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the MySQL service on local computer started and then stopped

the MySQL service on local computer started and then stopped. Some services stop automatically if they are not ... resolve this issue? Thanks. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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659 views

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the bytes type in python 2.7 and PEP-358

According to PEP 358, a bytes object is used to store a mutable sequence of bytes (0-255), raising if ... the implementation does not conform ? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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