大约有 43,000 项符合查询结果(耗时:0.0203秒) [XML]

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gulp.run is deprecated. How do I compose tasks?

...ly if needed or from within a watch. var gulp = require('gulp'), concat = require('gulp-concat'), markdown = require('gulp-showdown') ; var scriptFiles = [ 'ang/app.js' ]; var markdownFiles = [ 'content/articles/*.md']; var watchTask = function() { buildTask(); gulp.watch(scri...
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How does type Dynamic work and how to use it?

...Int] => args.asInstanceOf[Seq[Int]].sum.asInstanceOf[A] case "concat" if typeOf[A] =:= typeOf[String] => args.mkString.asInstanceOf[A] } } scala> val d = new DynImpl d: DynImpl = DynImpl@5d98e533 scala> d.sum(1, 2, 3) res0: Int = 6 scala> d.concat("a", "b", "c") r...
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LISTAGG in Oracle to return distinct values

...d the code- and got the error message as below ORA-01489: result of string concatenation is too long 01489. 00000 - "result of string concatenation is too long" *Cause: String concatenation result is more than the maximum size. – Priyanth Jul 17 '12 at 12:2...
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LEFT JOIN only first row

...ect only the first item in a LEFT JOIN. You can use a subquery that GROUP_CONCATS what you want (sorted, too!), then just split the GROUP_CONCAT'd result and take only its first item, like so... LEFT JOIN Person ON Person.id = ( SELECT SUBSTRING_INDEX( GROUP_CONCAT(FirstName ORDER BY F...
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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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Pad a string with leading zeros so it's 3 characters long in SQL Server 2008

...nt of Hogan's answer which I use in SQL Server Express 2012: SELECT RIGHT(CONCAT('000', field), 3) Instead of worrying if the field is a string or not, I just CONCAT it, since it'll output a string anyway. Additionally if the field can be a NULL, using ISNULL might be required to avoid function g...
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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...
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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...
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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 | ...
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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) share | improve this answer ...