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C++11 range based loop: get item by value or reference to const
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How to configure encoding in Maven?
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No, the only global setting of coding is to be done by env. variable: stackoverflow.com/a/9976788/715269
– Gangnus
Mar 9 at 15:35
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fatal: The current branch master has no upstream branch
...d that he already tried this. 2nd one: -u option is the shortcut for the --set-upstream option which has nothing to do with the creation of a new branch. From the documentation of the -u or --set-upstream option: "For every branch that is up to date or successfully pushed, add upstream (tracking) re...
1052: Column 'id' in field list is ambiguous
I have 2 tables. tbl_names and tbl_section which has both the id field in them. How do I go about selecting the id field, because I always get this error:
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Why does substring slicing with index out of range work?
...ut-of-bounds slice. It's analogous to performing the union of two disjoint sets.
– senderle
Feb 28 '12 at 22:49
Just t...
convert streamed buffers to utf8-string
... It defaults to utf8 if you don't provide a parameter, but I've explicitly set the encoding in this example.
var req = http.request(reqOptions, function(res) {
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res.on('data', function(chunk) {
var textChunk = chunk.toString('utf8');
// process utf8 text chunk
});
})...
How to request a random row in SQL?
How can I request a random row (or as close to truly random as is possible) in pure SQL?
28 Answers
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Removing all non-numeric characters from string in Python
...ng these constants heavily, it can be worthwhile to covert them to a frozenset. That enables O(1) lookups, rather than O(n), where n is the length of the constant for the original strings.
>>> digits = frozenset(digits)
>>> ''.join(c for c in "abc123def456" if c in digits)
'123456...
Python: What OS am I running on?
What do I need to look at to see whether I'm on Windows or Unix, etc?
25 Answers
25
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App Inventor 2 数学代码块 · App Inventor 2 中文网
... integer)
随机小数 (random fraction)
设定随机数种子 (random set seed to)
最小值 (min)
最大值 (max)
平方根 (square root)
绝对值 (abs)
相反数 (neg)
对数 (log)
e^
四舍五入 (round)
上取整 (ceiling)
下取整 (floor)
求模 (modulo)
余数 (r...