大约有 23,000 项符合查询结果（耗时：0.0340秒） [XML]
unable to install pg gem
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64
gem install pg -- --with-pg-config=/usr/pgsql-9.1/bin/pg_config
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Why use the SQL Server 2008 geography data type?
I am redesigning a customer database and one of the new pieces of information I would like to store along with the standard address fields (Street, City, etc.) is the geographic location of the address. The only use case I have in mind is to allow users to map the coordinates on Google maps when th...
Performance differences between debug and release builds
...Release build version of your program. It does happen however. Both the x64 and the x86 jitters have had problems with structs. The x86 jitter has trouble with floating point consistency, producing subtly different results when the intermediates of a floating point calculation are kept in a FPU r...
How do I verify/check/test/validate my SSH passphrase?
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Python's time.clock() vs. time.time() accuracy?
...apsed since the
first call to this function, as a floating point number, based on the
Win32 function QueryPerformanceCounter(). The resolution is typically
better than one microsecond.
Additionally, there is the timeit module for benchmarking code snippets.
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Postgresql: Scripting psql execution with password
...answer your question, there are a few ways provide a password for password-based authentication. The obvious way is via the password prompt. Instead of that, you can provide the password in a pgpass file or through the PGPASSWORD environment variable. See these:
https://www.postgresql.org/docs/...
Why does this method print 4?
...ze can differ in two different machines. Stack size depends on a lot of os-based factors namely memory page-size etc
– Jatin
Jul 24 '13 at 12:13
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Hidden features of Ruby
...duce code nicely, especially when I am grabbing blocks of lines from files based on some criteria.
– the Tin Man
Dec 8 '11 at 20:01
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Difference between byte vs Byte data types in C# [duplicate]
...ias of System.Byte struct. Different .NET languages have different aliases based on the semantics of the particular language, but they all map to specific types in the .NET framework.
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USB Debugging option greyed out
...ebug when linked to the computer. Check it.
– DSlomer64
Jul 22 '16 at 12:25
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