大约有 18,616 项符合查询结果（耗时：0.0270秒） [XML]
How to pass a user defined argument in scrapy spider
I am trying to pass a user defined argument to a scrapy's spider. Can anyone suggest on how to do that?
5 Answers
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Validate decimal numbers in JavaScript - IsNumeric()
What's the cleanest, most effective way to validate decimal numbers in JavaScript?
49 Answers
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Batch file to delete files older than N days
I am looking for a way to delete all files older than 7 days in a batch file. I've searched around the web, and found some examples with hundreds of lines of code, and others that required installing extra command line utilities to accomplish the task.
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Declare slice or make slice?
In Go, what is the difference between var s []int and s := make([]int, 0) ?
4 Answers
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MySQL: ignore errors when importing?
I am importing a fairly large database. The .sql file has almost 1,000,000 lines in it. Problem is that I am getting a syntax error when trying to import the database. It says:
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How to Correctly Use Lists in R?
Brief background: Many (most?) contemporary programming languages in widespread use have at least a handful of ADTs [abstract data types] in common, in particular,
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Count occurrences of a char in plain text file
Is there any way under linux/terminal to count, how many times the char f occurs in a plain text file?
5 Answers
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What does asterisk * mean in Python? [duplicate]
Does * have a special meaning in Python as it does in C? I saw a function like this in the Python Cookbook:
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how to create a file name with the current date & time in python?
Here is a functional code (Create file with success)
6 Answers
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Convert a String representation of a Dictionary to a dictionary?
How can I convert the str representation of a dict , such as the following string, into a dict ?
9 Answers
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