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Why am I getting tree conflicts in Subversion?
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I found the solution reading the link that Gary gave (and I suggest to follow this way).
Summarizing to resolve the tree conflict committing your working directory with SVN client 1.6.x you can use:
svn resolve --accept working -R .
where . i...
Convert list of dictionaries to a pandas DataFrame
... NaN NaN
1 7.0 9.0 NaN NaN NaN 5.0
2 NaN 4.0 7.0 NaN 6.0 NaN
Reading Subset of Columns
"What if I don't want to read in every single column"? You can easily specify this using the columns=... parameter.
For example, from the example dictionary of data2 above, if you wanted to read only...
How to securely store access token and secret in Android?
...edPreferences . But I am a bit worried about security aspects with that. I read that you can encrypt and decrypt the tokens but it is easy for an attacker to just decompile your apk and classes and get the encryption key.
What's the best method to securely store these tokens in Android?
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How the single threaded non blocking IO model works in Node.js
I'm not a Node programmer, but I'm interested in how the single threaded non blocking IO model works.
After I read the article understanding-the-node-js-event-loop , I'm really confused about it.
It gave an example for the model:
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What's the meaning of exception code “EXC_I386_GPFLT”?
...verwriting some pointer data with other stuff, or going out of bounds when reading some pointer value.
Another likely causes is unaligned access with an SSE register - in other word, reading a 16-byte SSE register from an address that isn't 16-byte aligned.
There are, as I said, many other possi...
Why is lock(this) {…} bad?
...esigner/creator knowing about it. This increases the complexity of multi-threaded solutions and might affect their correctness.
A private field is usually a better option as the compiler will enforce access restrictions to it, and it will encapsulate the locking mechanism. Using this violates encap...
How can I extract a predetermined range of lines from a text file on Unix?
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You don't need the cat command; head can read a file directly. This is slower than many alternatives because it uses 2 (3 as shown) commands where 1 is sufficient.
– Jonathan Leffler
Jan 5 '15 at 18:41
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Which would be better for concurrent tasks on node.js? Fibers? Web-workers? or Threads?
...gling and got these answers to solve the problem: Fibers, Webworkers and Threads (thread-a-gogo). Now which one to use is a confusion and one of them definitely needs to be used - afterall what's the purpose of having a server which is just good at IO and nothing else? Suggestions needed!
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WSAAsyncSelect模型 - C/C++ - 清泛网 - 专注C/C++及内核技术
...IEvent //指定哪些通知码需要发送
//FD_READ可以读套接字
//FD_WRITE 可以写套接字
//FD_ACCEPT 监听套接字有连接接入
//FD_CONNET 如果套接字连接对方主机，连...
PostgreSQL ERROR: canceling statement due to conflict with recovery
...be canceled more often.
You can work around this by starting a repeatable read transaction on primary which does a dummy query and then sits idle while a real query is run on secondary. Its presence will prevent vacuuming of old row versions on primary.
More on this subject and other workarounds a...