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What does the “__block” keyword mean?
What exactly does the __block keyword in Objective-C mean? I know it allows you to modify variables within blocks, but I'd like to know...
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What is the difference between match_parent and fill_parent?
I'm a little confused about two XML properties: match_parent and fill_parent . It seems that both are the same. Is there any difference between them?
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Which @NotNull Java annotation should I use?
...nar) to avoid NullPointerExceptions. Many of the tools seem incompatible with each others' @NotNull / @NonNull / @Nonnull annotation and listing all of them in my code would be terrible to read. Any suggestions of which one is the 'best'? Here is the list of equivalent annotations I've found:
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Comparison of full text search engine - Lucene, Sphinx, Postgresql, MySQL?
I'm building a Django site and I am looking for a search engine.
9 Answers
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Check if directory mounted with bash
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Running the mount command without arguments will tell you the current mounts. From a shell script, you can check for the mount point with grep and an if-statement:
if mount | grep /mnt/md0 > /dev/null; then
echo "yay"
else
echo "nay"
fi
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Reducing MongoDB database file size
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UPDATE: with the compact command and WiredTiger it looks like the extra disk space will actually be released to the OS.
UPDATE: as of v1.9+ there is a compact command.
This command will perform a compaction "in-line". It will stil...
How to navigate back to the last cursor position in Visual Studio?
What is the keyboard shortcut navigate back to the last cursor position in Visual Studio?
5 Answers
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What is dynamic programming? [closed]
...Dynamic programming is used a lot in string problems, such as the string edit problem. You solve a subset(s) of the problem and then use that information to solve the more difficult original problem.
With dynamic programming, you store your results in some sort of table generally. When you need the...
Why is there no tuple comprehension in Python?
...follow
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edited Jun 18 '19 at 0:14
Tom Zych
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How to avoid “RuntimeError: dictionary changed size during iteration” error?
I have checked all of the other questions with the same error yet found no helpful solution =/
11 Answers
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