大约有 44,200 项符合查询结果(耗时:0.0524秒) [XML]
How to debug Lock wait timeout exceeded on MySQL?
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265
What gives this away is the word transaction. It is evident by the statement that the query w...
Finding local IP addresses using Python's stdlib
How can I find local IP addresses (i.e. 192.168.x.x or 10.0.x.x) in Python platform independently and using only the standard library?
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Preferred way to create a Scala list
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answered Aug 6 '09 at 20:56
Daniel C. SobralDaniel C. Sobral
280k8282 gold badges469469 silver badges666666 bronze badges
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Dictionaries and default values
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323
Like this:
host = connectionDetails.get('host', someDefaultValue)
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Add a common Legend for combined ggplots
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Update 2015-Feb
See Steven's answer below
df1 <- read.table(text="group x y
group1 -0.212201 0.358867
group2 -0.279756 -0.126194
group3 0.186860 -0.203273
group4 0.417117 -0.002592
group1 -0.212201 0.358867
group...
Emulate ggplot2 default color palette
What function can I use to emulate ggplot2's default color palette for a desired number of colors. For example, an input of 3 would produce a character vector of HEX colors with these colors:
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When to use , tag files, composite components and/or custom components?
I started using JSF 2.0 with Facelets recently and got puzzled by new composite components knowing existing <ui:include> and other templating techniques offered by Facelets 1.x.
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Get ID of last inserted document in a mongoDB w/ Java driver
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answered Jul 26 '10 at 21:41
Matt WMatt W
5,79833 gold badges2727 silver badges4040 bronze badges
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std::vector performance regression when enabling C++11
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247
I can reproduce your results on my machine with those options you write in your post.
Howeve...
How can I check for Python version in a program that uses new language features?
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112
You can test using eval:
try:
eval("1 if True else 2")
except SyntaxError:
# doesn't have t...