大约有 43,000 项符合查询结果（耗时：0.0240秒） [XML]
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
...
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...
JSON formatter in C#?
... ch == ',' && quotes % 2 == 0 ? ch + Environment.NewLine + String.Concat(Enumerable.Repeat(INDENT_STRING, indentation)) : null
let openChar = ch == '{' || ch == '[' ? ch + Environment.NewLine + String.Concat(Enumerable.Repeat(INDENT_STRING, ++indentation)) : ch.ToString()
le...
Given a DateTime object, how do I get an ISO 8601 date in string format?
...30:00
UtcNow obviously returns a UTC time so there is no harm in:
string.Concat(DateTime.UtcNow.ToString("s"), "Z")
share
|
improve this answer
|
follow
|
...
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)
share
|
improve this answer
...
Force drop mysql bypassing foreign key constraint
...L Community Server (GPL)
Steps I followed:
1. generate drop query using concat and group_concat.
2. use database
3. turn off / disable foreign key constraint check (SET FOREIGN_KEY_CHECKS = 0;),
4. copy the query generated from step 1
5. re enable foreign key constraint check (SET FOREIGN_KE...
Is there a JavaScript function that can pad a string to get to a determined length?
...n just appends to string to be added to this pre-padded string (one string concat) and then slices or trims the result to the desired length.
function pad(pad, str, padLeft) {
if (typeof str === 'undefined')
return pad;
if (padLeft) {
return (pad + str).slice(-pad.length);
} else {
...
String Concatenation using '+' operator
... see the operators == and != overloaded. So how is it able to perform concatenation for the ' + ' operator?
1 Answer
...
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
...
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
...