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MySQL, Check if a column exists in a table with SQL
...fic table in MySQL has a specific column, and if not — create it. Otherwise do nothing. This is really an easy procedure in any enterprise-class database, yet MySQL seems to be an exception.
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What is “X-Content-Type-Options=nosniff”?
...netration testing on my localhost with OWASP ZAP, and it keeps reporting this message:
5 Answers
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How many classes should I put in one file? [closed]
...model where you can have one public class per file. Python doesn't have this restriction, and I'm wondering what's the best practice for organizing classes.
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Compare equality between two objects in NUnit
I'm trying to assert that one object is "equal" to another object.
20 Answers
20
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How to specialize std::hash::operator() for user-defined type in unordered containers?
...amespace std*. The correct (and basically only) way to add a hash function is this:
namespace std {
template <> struct hash<Foo>
{
size_t operator()(const Foo & x) const
{
/* your code here, e.g. "return hash<int>()(x.value);" */
}
};
}
(Other popular...
What does @hide mean in the Android source code?
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Android has two types of APIs that are not accessible via SDK.
The first one is located in package com.android.internal. The second API type is a collection of classes and methods that are marked with the @hide Javadoc attribute.
Starting from Andr...
Error - Unable to access the IIS metabase
After installing Visual Studio 2012 and opening my solution I get a series of errors in this form:
37 Answers
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Debugging Scala code with simple-build-tool (sbt) and IntelliJ
...bugger? The documentation from "RunningSbt" from sbt's google code site lists commands for running the main class for a project or the tests, but there seem to be no commands for debugging.
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How do I rename a column in a database table using SQL?
If I wish to simply rename a column (not change its type or constraints, just its name) in an SQL database using SQL, how do I do that? Or is it not possible?
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Block Comments in Clojure
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Actually, there is a way!
(comment
(defn hey []
("Hey there!"))
Check me out!
)
Just wrap your comments in (comment ..) :)
Have fun!
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