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How do I read the contents of a Node.js stream into a string variable?
... stream.on('error', reject)
stream.on('end', () => resolve(Buffer.concat(chunks).toString('utf8')))
})
}
const result = await streamToString(stream)
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...
Apply pandas function to column to create multiple new columns?
...3 1.100880 -0.899120
4 1.017859 -0.982141
Editing for completeness
pd.concat([df, df.textcol.apply(lambda s: pd.Series({'feature1':s+1, 'feature2':s-1}))], axis=1)
textcol feature1 feature2
0 0.626524 1.626524 -0.373476
1 0.119967 1.119967 -0.880033
2 0.803650 1.803650 -0.196350
3 0.10...
What does “Splats” mean in the CoffeeScript tutorial?
...args, as it allows you to treat function parameters as list
for example:
concat = (args...) -> args.join(', ')
concat('hello', 'world') == 'hello, world'
concat('ready', 'set', 'go!') == 'ready, set, go!'
it works in assginments, too:
[first, rest...] = [1, 2, 3, 4]
first == 1
rest == [2, 3,...
How to convert / cast long to String?
...
What's the differente between this way, or just concat like this: ("" + longAttr) ?
– Marcelo Assis
Feb 8 '12 at 13:05
4
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How to insert an item into an array at a specific index (JavaScript)?
....insert = function (index, items) { this.splice.apply(this, [index, 0].concat(items)); }
– Ryan Smith
May 30 '14 at 12:15
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Best way to test SQL queries [closed]
...elect statement that catenates the test name and the case statement
select concat(
-- the test name
'For every (year, month) there is one and only one (absolute_month): ',
-- the case statement
case when
-- one or more subqueries
-- in this case, an expected value and an actual value
-- that ...
How to concatenate strings of a string field in a PostgreSQL 'group by' query?
I am looking for a way to concatenate the strings of a field within a group by query. So for example, I have a table:
14 An...
XPath to find elements that does not have an id or class
...ss, 'b'))]
Or if you want to be sure not to match partial.
//*[contains(concat(' ', normalize-space(@class), ' '), ' some-class ') and
not(contains(concat(' ', normalize-space(@class), ' '), ' another-class '))]
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How to leave a message for a github.com user
.../,'$1')}/events/public`).then(e=> e.json()).then(e => [...new Set([].concat.apply([],e.filter(x => x.type==='PushEvent').map(x => x.payload.commits.map(c => c.author.email)))).values()]).then(x => results.innerText = x)">GO</button>
<div id=results></div>
...
Nginx缓存解决方案：SRCache - 更多技术 - 清泛网 - 专注C/C++及内核技术
..."?"
key[#key + 1] = query
end
key = table.concat(key)
key = ngx.md5(key)
ngx.var.phoenix_key = key
local now = ngx.time()
if ngx.var.arg_phoenix == true then
ngx.var.phoenix_fetch_skip = 0
else
...