大约有 46,000 项符合查询结果（耗时：0.0168秒） [XML]
Best way to get InnerXml of an XElement?
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Plain old System.Xml - Greg Hurlman (0.134 seconds)
Aggregate with string concatenation - Mike Powell (0.324 seconds)
StringBuilder - Vin (0.333 seconds)
String.Join on array - Terry (0.360 seconds)
String.Concat on array - Marcin Kosieradzki (0.364)
Method
I used a single XML document with 20...
How do I connect to a specific Wi-Fi network in Android programmatically?
... well).
WifiConfiguration wfc = new WifiConfiguration();
wfc.SSID = "\"".concat(ssid).concat("\"");
wfc.status = WifiConfiguration.Status.DISABLED;
wfc.priority = 40;
Now for the more complicated part: we need to fill several members of WifiConfiguration to specify the network’s security mode....
Create JSON object dynamically via JavaScript (Without concate strings)
...estions%2f16507222%2fcreate-json-object-dynamically-via-javascript-without-concate-strings%23new-answer', 'question_page');
}
);
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How do I combine two data frames?
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You can also use pd.concat, which is particularly helpful when you are joining more than two dataframes:
bigdata = pd.concat([data1, data2], ignore_index=True, sort=False)
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Create a list from two object lists with linq
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For reference: there's also Concat that doesn't merge duplicates
– Kos
Apr 15 '12 at 10:12
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How do I quickly rename a MySQL database (change schema name)?
...ginally suggested the former and someone "improved" my answer to use GROUP_CONCAT. Take your pick, but I prefer the original):
SELECT CONCAT('RENAME TABLE $1.', table_name, ' TO $2.', table_name, '; ')
FROM information_schema.TABLES
WHERE table_schema='$1';
or
SELECT GROUP_CONCAT('RENAME TABLE ...
Concat scripts in order with Gulp
...mque module which has worked quite well for specifying order of in my case concatenation. https://github.com/gulpjs/gulp/blob/master/docs/recipes/using-multiple-sources-in-one-task.md
Example of how I used it is below
var gulp = require('gulp');
var concat = require('gulp-concat');
v...
String concatenation in Ruby
I am looking for a more elegant way of concatenating strings in Ruby.
16 Answers
16
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Finding duplicate values in MySQL
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@NobleUplift You can do a GROUP_CONCAT(id) and it will list the IDs. See my answer for an example.
– Matt Rardon
Feb 19 '15 at 0:53
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convert string array to string
...er option than using the already mentioned use of the Join() method is the Concat() method. It doesn't require an empty delimiter parameter as Join() does. Example:
string[] test = new string[2];
test[0] = "Hello ";
test[1] = "World!";
string result = String.Concat(test);
hence it is likely fast...