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What is the difference between 'E', 'T', and '?' for Java generics?
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Well there's no difference between the first two - they're just using different names for the type parameter (E or T).
The third isn't a valid declaration - ? is used as a wildcard which is used when providing a type argument, e.g. List<?> foo = ... means that foo refers to a list of s...
ANTLR: Is there a simple example?
I'd like to get started with ANTLR, but after spending a few hours reviewing the examples at the antlr.org site, I still can't get a clear understanding of the grammar to Java process.
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PostgreSQL “DESCRIBE TABLE”
How do you perform the equivalent of Oracle's DESCRIBE TABLE in PostgreSQL (using the psql command)?
22 Answers
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How do I list the symbols in a .so file
How do I list the symbols being exported from a .so file? If possible, I'd also like to know their source (e.g. if they are pulled in from a static library).
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How do you convert an entire directory with ffmpeg?
How do you convert an entire directory/folder with ffmpeg via command line or with a batch script?
24 Answers
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How can I parse a CSV string with JavaScript, which contains comma in data?
I have the following type of string
17 Answers
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dplyr: “Error in n(): function should not be called directly”
I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded.
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Find and Replace text in the entire table using a MySQL query
Usually I use manual find to replace text in a MySQL database using phpmyadmin. I'm tired of it now, how can I run a query to find and replace a text with new text in the entire table in phpmyadmin?
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Bower: ENOGIT Git is not installed or not in the PATH
Git is installed and is in the path.
16 Answers
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Where to place the 'assets' folder in Android Studio?
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Since Android Studio uses the new Gradle-based build system, you should be putting assets/ inside of the source sets (e.g., src/main/assets/).
In a typical Android Studio project, you will have an app/ module, with a main/ sourceset (app/src/main/ off of the ...