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What does the red exclamation point icon in Eclipse mean?
...h errors
In practice, I've found that a "build path error" may be caused by any number of reasons, depending on what plugins are active. Check the "Problems" view for more information.
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im...
Are PostgreSQL column names case-sensitive?
I have a db table say, persons in Postgres handed down by another team that has a column name say, "first_Name" . Now am trying to use PG commander to query this table on this column-name.
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App restarts rather than resumes
...
The behavior you are experiencing is caused by an issue that exists in some Android launchers since API 1. You can find details about the bug as well as possible solutions here: https://code.google.com/p/android/issues/detail?id=2373.
It's a relatively common issue o...
Select rows of a matrix that meet a condition
...y will not.
To perform the operation on a matrix, you can define a column by name:
m[m[, "three"] == 11,]
Or by number:
m[m[,3] == 11,]
Note that if only one row matches, the result is an integer vector, not a matrix.
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How can I obtain an 'unbalanced' grid of ggplots?
...rrange multiple ggplot figures in a grid to achieve a multi-panel figure by using something like:
4 Answers
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Why do we need the “finally” clause in Python?
...swered Jul 18 '12 at 23:46
Mark ByersMark Byers
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How does HTTP file upload work?
...ample above already includes this, but it can be easy to miss. See comment by @Andreas below.
Instead of URL encoding the form parameters, the form parameters (including the file data) are sent as sections in a multipart document in the body of the request.
In the example above, you can see the in...
Why can't a text column have a default value in MySQL?
...why a text column should not have a default value. No explanation is given by the MySQL documentation. It seems illogical to me (and somewhat frustrating, as I want a default value!). Anybody know why this is not allowed?
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Are there any cases when it's preferable to use a plain old Thread object instead of one of the newe
...fact that a plain old thread's functionality can be replaced in many cases by the ThreadPool class.
10 Answers
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Is null reference possible?
...create such a reference would be to
bind it to the “object” obtained by
dereferencing a null pointer, which
causes undefined behavior. As
described in 9.6, a reference cannot
be bound directly to a bit-field. ]
1.9/4:
Certain other operations are described
in this International...