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How do I properly clean up Excel interop objects?

...able reference. You should also release your named references in reverse order of importance: range objects first, then worksheets, workbooks, and then finally your Excel Application object. For example, assuming that you had a Range object variable named xlRng, a Worksheet variable named xlSheet...
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How do I list all files of a directory?

...x.2: How to copy all files from a directory to another? A script to make order in your computer finding all files of a type (default: pptx) and copying them in a new folder. import os import shutil from path import path destination = "F:\\file_copied" # os.makedirs(destination) def copyfile(dir...
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What are the differences between a HashMap and a Hashtable in Java?

...es is LinkedHashMap, so in the event that you'd want predictable iteration order (which is insertion order by default), you could easily swap out the HashMap for a LinkedHashMap. This wouldn't be as easy if you were using Hashtable. Since synchronization is not an issue for you, I'd recommend Has...
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What really happens in a try { return x; } finally { x = null; } statement?

... statement is executed, but the return value isn't affected. The execution order is: Code before return statement is executed Expression in return statement is evaluated finally block is executed Result evaluated in step 2 is returned Here's a short program to demonstrate: using System; class ...
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Quickly reading very large tables as dataframes

...e end object is a data frame. So you have to convert it to a zoo object in order to use it with zoo. Look at the examples in the zoo docs for illustrations. – JD Long Apr 2 '13 at 12:48 ...
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How can I specify a local gem in my Gemfile?

... In order to use local gem repository in a Rails project, follow the steps below: Check if your gem folder is a git repository (the command is executed in the gem folder) git rev-parse --is-inside-work-tree Getting repository...
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getMinutes() 0-9 - How to display two digit numbers?

... (condition?true:false) in PHP you can omit the true statement (condition?:false) in JS you would then use (condition||false) Ternary operator en.wikipedia.org/wiki/Ternary_operation – llange Mar 16 '19 at 9:53 ...
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Response Content type as CSV

... because you are using compression of data trasnferes. The solution is (in php code)...... header('X-Content-Type-Options: nosniff'); share | improve this answer | follow ...
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XmlSerializer: remove unnecessary xsi and xsd namespaces

...and replaced it with what follows: // You have to use this constructor in order for the root element to have the right namespaces. // If you need to do custom serialization of inner objects, you can use a shortened constructor. XmlSerializer xs = new XmlSerializer(typeof(MyTypeWithNamespaces), new ...
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How does the Windows Command Interpreter (CMD.EXE) parse scripts?

...e special characters & | < or >, split the line at this point in order to handle pipes, command concatenation, and redirection. In the case of a pipe (|), each side is a separate command (or command block) that gets special handling in phase 5.3 In the case of &, &&, or || co...