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Remove Primary Key in MySQL
...ROP PRIMARY KEY;
Note that you have a composite PRIMARY KEY which covers all three columns and id is not guaranteed to be unique.
If it happens to be unique, you can make it to be a PRIMARY KEY and AUTO_INCREMENT again:
ALTER TABLE user_customer_permission MODIFY id INT NOT NULL PRIMARY KEY AUTO...
When to use actors instead of messaging solutions such as WebSphere MQ or Tibco Rendezvous?
...quire casting due to Scala's type system.
Also in Java people don't typically make immutable objects which I recommend you do for messaging. Consequently its very easy in Java to accidentally do something using Akka that will not scale (using mutable objects for messages, relying on weird closure ...
Xml serialization - Hide null values
When using a standard .NET Xml Serializer, is there any way I can hide all null values? The below is an example of the output of my class. I don't want to output the nullable integers if they are set to null.
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Prevent any form of page refresh using jQuery/Javascript
...system tries real hard to do #2, and the situation described above happens all the time. I usually have to wait until the server-side session expires before I can use the banking system again.
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Check if user is using IE
I am calling a function like the one below by click on divs with a certain class.
30 Answers
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Artificially create a connection timeout error
...occurs when I receive a connection timeout. These errors are very rare (usually when my connection gets dropped by our internal network). How can I generate this kind of effect artificially so I can test our software?
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How to make junior programmers write tests? [closed]
...way to start testing. This way, known bugs never get re-introduced accidentally.
– Jonathan
Apr 8 '09 at 9:00
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Putting a simple if-then-else statement on one line [duplicate]
I'm just getting into Python and I really like the terseness of the syntax. However, is there an easier way of writing an if - then - else statement so it fits on one line?
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Best way to test exceptions with Assert to ensure they will be thrown
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Although your code is functionally sound I do not recommend using the ExpectedException attribute (since it's too constraining and error-prone) or to write a try/catch block in each test (since it's too complicated and error-prone). Use a well-designed as...
Where to find the win32api module for Python? [closed]
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The import name not matching the pip install name thing is absolutely stupid and obnoxious.
– gbtimmon
Oct 6 '17 at 19:46
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