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1 How to check for file existence [duplicate]
2011年12月21 - This question already has an answer here: 这个问题已经有了答案: How to check if a directory/file/symlink exists with one command in Ruby 2 answers
2 How to check for “undefined” in JavaScript? [duplicate]
2010年08月02 - to check a not-defined variable in JavaScript 11 answers 如何在JavaScript 11中检查未定义的变量? How to handle 'undefined' in javascript [duplicate] 3 answers
3 How to check size of a file?
2011年05月07 - ; how to make a script check if it is less than 90k (including 0), and make it do wget a new copy because the file is corrupt in this case. 我有一个脚本可以检查0大小
4 Pythonic way to check if a file exists? [duplicate]
2010年02月13 - This question already has an answer here: 这个问题已经有了答案: How to check whether a file exists? 39 answers 如何检查文件是否存在?39岁的答案 Which
5 How do I Check for Duplicate Items in a ListView?
2011年07月31 - to check to make sure that I don't duplicate a field when I add an item to the ListView. How do I do that?" I tried this code, but it doesn't seem to work
6 Excel: How to check if a cell is empty with VBA? [duplicate]
2012年11月13 - Possible Duplicate: Using VBA to check if below cell is empty 可能的副本:使用VBA检查下面的单元格是否为空。 As VBA via check if a cell is empty from another
7 How to check file size in python?
2010年01月20 - an email to somebody, otherwise continue to other things. 我正在Windows中编写一个Python脚本。我想做一些基于文件大小的事情。例如,如果size大于0,我将发送邮件给某人,否则继续做其他事情。 How do I check the file
8 How to check whether a file exists?
2008年09月17 - How to see if a file exists or not, without using the try statement? 如何查看是否存在文件,而不使用try语句?
9 How to check if a file exists in a folder?
2011年09月12 - I need to check if an xml file exists in the folder. 我需要检查文件夹中是否存在xml文件。 DirectoryInfo di = new DirectoryInfo(ProcessingDirectory); FileInfo
10 How to check if a string starts with a specified string? [duplicate]
2010年05月07 - ()函数。 I'm trying to check if a string starts with http. How can I do this check? 我试着检查一个字符串是否从http开始。我该怎么做这张支票? $string1 = 'google.com'; $string2

 
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