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Which comment style should I use in batch files?

I've been writing some batch files, and I ran into this user guide , which has been quite informative. One thing it showed me was that lines can be commented not just with REM , but also with :: . It says: ...
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How do I merge a list of dicts into a single dict?

How can I turn a list of dicts like this 10 Answers 10 ...
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#ifdef #ifndef in Java

I doubt if there is a way to make compile-time conditions in Java like #ifdef #ifndef in C++. 8 Answers ...
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How do you convert a byte array to a hexadecimal string, and vice versa?

How can you convert a byte array to a hexadecimal string, and vice versa? 45 Answers 4...
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How do I run a batch file from my Java Application?

In my Java application, I want to run a batch file that calls " scons -Q implicit-deps-changed build\file_load_type export\file_load_type " ...
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Why is address zero used for the null pointer?

In C (or C++ for that matter), pointers are special if they have the value zero: I am adviced to set pointers to zero after freeing their memory, because it means freeing the pointer again isn't dangerous; when I call malloc it returns a pointer with the value zero if it can't get me memory; I use ...
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How can I get the concatenation of two lists in Python without modifying either one? [duplicate]

In Python, the only way I can find to concatenate two lists is list.extend , which modifies the first list. Is there any concatenation function that returns its result without modifying its arguments? ...
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How to send a command to all panes in tmux?

I like to call :clear-history on panes with a huge scrollback. However, I want to script a way to send this command to all the panes in the various windows. ...
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Create a “with” block on several context managers? [duplicate]

Suppose you have three objects you acquire via context manager, for instance A lock, a db connection and an ip socket. You can acquire them by: ...
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Run function from the command line

I have this code: 16 Answers 16 ...