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How to write log to file
....O_RDWR | os.O_CREATE | os.O_APPEND, 0666)
if err != nil {
log.Fatalf("error opening file: %v", err)
}
defer f.Close()
log.SetOutput(f)
log.Println("This is a test log entry")
Based on the Go docs, os.Open() can't work for log.SetOutput, because it opens the file "for reading:"
func Open
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Retrieving a List from a java.util.stream.Stream in Java 8
I was playing around with Java 8 lambdas to easily filter collections. But I did not find a concise way to retrieve the result as a new list within the same statement. Here is my most concise approach so far:
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Total memory used by Python process?
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I have this error: return [ wmi_object (obj, instance_of, fields) for obj in self._raw_query(wql) ] File "C:\Python27\lib\site-packages\win32com\client\util.py", line 84, in next return _get_good_object_(self._iter.next(), result...
新手程序员应该知道的7件事 - 创意 - 清泛网 - 专注C/C++及内核技术
...候，对于计算机我有很多不明白的地方。文件系统，网络连接以及内存机制就是三个明显的例子。不了解这些，意味着我可能会不知道一些我想要呈现的编程结构的目标。”
2、知道命令行工具
作为一个开发人员，你必然需要...
Rails 4 - Strong Parameters - Nested Objects
... @nayiaw i also get the unpermitted message but adding permit! raises this error NoMethodError (undefined method permit!' for #<Array:0x007f80cb71ea00>):`
– wuliwong
Apr 17 '18 at 22:17
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Eclipse - Unable to install breakpoint due to missing line number attributes
I am getting this strange error in Eclipse while trying to set a breakpoint.
41 Answers
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Numpy `logical_or` for more than two arguments
Numpy's logical_or function takes no more than two arrays to compare. How can I find the union of more than two arrays? (The same question could be asked with regard to Numpy's logical_and and obtaining the intersection of more than two arrays.)
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How to convert SSH keypairs generated using PuTTYgen (Windows) into key-pairs used by ssh-agent and
...et It is required that your private key files are NOT accessible by others error like I had run cd ~/.ssh and chmod 700 id_rsa
– expert
Oct 15 '12 at 17:48
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Check string for palindrome
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edited May 18 '15 at 23:05
Michael Myers♦
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Create a list from two object lists with linq
...lue,
Change = p2.Value - p1.Value
}));
Although this won't error in the case where you have duplicate names in either set.
Some other answers have suggested using unioning - this is definitely not the way to go as it will only get you a distinct list, without doing the combining.
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