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Update a column value, replacing part of a string
I have a table with the following columns in a MySQL database
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sbt-assembly: deduplication found error
I am not sure whether mergestrategy or exclude jars is the best option here. Any help with how do I proceed further with this error will be great!
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ssl证书申请报错:challenge = [c for c in authorization[\'challenges\']...
ssl证书申请报错:challenge = [c for c in authorization['challenges'] if c['type'] == "http-01"][0] IndexError: list index out of rangechallenge-list-index-out-of-range使用acme-tiny申请ssl证书时报错:challenge = [c for c in authorization[& 39;challenges& 39;] if c[& 39;type& 39;] == ...
Linux C/C++进程单实例互斥代码分享 - C/C++ - 清泛网 - 专注C/C++及内核技术
Linux C/C++进程单实例互斥代码分享linux-process-singleton分享一段LinuxC C++程序只能启动一份实例的实现代码,原理是通过文件锁互斥实现,最重要的是考虑了不同用户运行同一程序互斥的场景,已经过充分的测试,可直接用于实际项...
dplyr: “Error in n(): function should not be called directly”
I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded.
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How do I get rid of this unwanted bar from Eclipse?
When coding in Eclipse(Indigo), I accidentally hit a combination of keys which made this bar appear when I was doing some shortcuts. This question has probably being answered before but since I don't know the exact name of the bar googling the problem has being fruitless. I've spent two hours trying...
Django - Circular model import issue
I'm really not getting this, so if someone could explain how this works I'd very much appreciate it. I have two applications, Accounts and Theme... here is my settings list:
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Check if string matches pattern
How do I check if a string matches this pattern?
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Cmake vs make sample codes?
I was wondering if there was any sample code for Makefile s ( make ) and CMakeLists.txt ( cmake ) that both do the same thing (the only difference being that one is written in make and the other in cmake ).
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How can I check if character in a string is a letter? (Python)
I know about islower and isupper , but can you check whether or not that character is a letter?
For Example:
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