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How to install JSTL? The absolute uri: http://java.sun.com/jstl/core cannot be resolved
I don't know what I've done incorrectly, but I can't include JSTL. I have jstl-1.2.jar, but unfortunately I get exception:
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How do I enable C++11 in gcc?
I use gcc 4.8.1 from http://hpc.sourceforge.net on Mac OSX Mountain Lion. I am trying to compile a C++ program which uses the to_string function in <string> . I need to use the flag -std=c++11 every time:
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Is an index needed for a primary key in SQLite?
...s a primary key in an SQLite table, should an index be explicitly created for it as well? SQLite does not appear to automatically create an index for a primary key column, but perhaps it indexes it anyway, given its purpose? (I will be searching on that column all the time).
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Difference between wait and sleep
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wait waits for a process to finish; sleep sleeps for a certain amount of seconds.
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What's the difference between equal?, eql?, ===, and ==?
...reat explanations. I encourage you to read it, and also the documentation for these methods as they're overridden in other classes, like String.
Side note: if you want to try these out for yourself on different objects, use something like this:
class Object
def all_equals(o)
ops = [:==, :===, ...
Why should text files end with a newline?
... that all text files should end with a newline. I've known of this "rule" for years but I've always wondered — why?
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How to modify a text file?
...ython, and would like to insert a string into a text file without deleting or copying the file. How can I do that?
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How to read a .xlsx file using the pandas Library in iPython?
I want to read a .xlsx file using the Pandas Library of python and port the data to a postgreSQL table.
6 Answers
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How do I choose a HTTP status code in REST API for “Not Ready Yet, Try Again Later”? [closed]
... time. There's a batch process in the server that generates all the blobs for all the thingies. Thingy 1234 already exists and its data, other than the blob, is already available. The server hasn't got to generating thingy 1234's blob yet.
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How to avoid isset() and empty()
...undefined" and "undefined offset" messages when running on the E_NOTICE error level, because the existence of variables is not explicitly checked using isset() and consorts.
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