大约有 47,000 项符合查询结果（耗时：0.0651秒） [XML]
Ruby / Rails: convert int to time OR get time from integer?
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312
Use Time.at:
t = Time.at(i)
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How do I list all loaded assemblies?
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edited May 23 '17 at 12:26
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answered Jan 19 '09 at 17:17
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Why are Perl 5's function prototypes bad?
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121
Prototypes aren't bad if used correctly. The difficulty is that Perl's prototypes don't work t...
Prevent strace from abbreviating arguments?
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1 Answer
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How to add an auto-incrementing primary key to an existing table, in PostgreSQL?
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Modern Versions of PostgreSQL
Suppose you have a table named test1, to which you want to add an auto-incrementing, primary-key id (surrogate) column. The following command should be sufficient in recent versions of PostgreSQL:
ALTER TABLE test1 ADD COLUMN id SERIAL PRIMARY KEY;
Older...
How to wait for all goroutines to finish without using time.Sleep?
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175
You can use sync.WaitGroup. Quoting the linked example:
package main
import (
"net/h...
How to get subarray from array?
I have var ar = [1, 2, 3, 4, 5] and want some function getSubarray(array, fromIndex, toIndex) , that result of call getSubarray(ar, 1, 3) is new array [2, 3, 4] .
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ADO.NET DataRow - check for column existence
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212
You can simply check like this:
return row.Table.Columns.Contains(columnName);
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Is explicitly closing files important?
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129
In your example the file isn't guaranteed to be closed before the interpreter exits. In curre...
How to download a single commit-diff from GitHub?
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215
OK, found the answer myself.
Adding .patch (or .diff) to the commit-URL will give a nice patch...