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MySQL Error 1093 - Can't specify target table for update in FROM clause
I have a table story_category in my database with corrupt entries. The next query returns the corrupt entries:
16 Answers...
Advantage of switch over if-else statement
What's the best practice for using a switch statement vs using an if statement for 30 unsigned enumerations where about 10 have an expected action (that presently is the same action). Performance and space need to be considered but are not critical. I've abstracted the snippet so don't hate m...
Can I add extension methods to an existing static class?
...ds require an instance variable (value) for an object. You can however, write a static wrapper around the ConfigurationManager interface. If you implement the wrapper, you don't need an extension method since you can just add the method directly.
public static class ConfigurationManagerWrapper
...
How do I get Windows to go as fast as Linux for compiling C++?
I know this is not so much a programming question but it is relevant.
13 Answers
13
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Inheritance vs. Aggregation [closed]
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It's not a matter of which is the best, but of when to use what.
In the 'normal' cases a simple question is enough to find out if we need inheritance or aggregation.
If The new class is more or less as the original class. ...
Why does CSS not support negative padding?
...reason behind this? Is there any obstruction to the property that prevents it's use as such? Thanks for your answers.
7 Ans...
Python function global variables?
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If you want to simply access a global variable you just use its name. However to change its value you need to use the global keyword.
E.g.
global someVar
someVar = 55
This would change the value of the global variable to 55. Otherwise it would just assign 55 to a local variable.
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Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
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One word answer: asynchronicity.
Forewords
This topic has been iterated at least a couple of thousands of times, here, in Stack Overflow. Hence, first off I'd like to point out some extremely useful resources:
@Felix Kling's answer to "How do I retu...
Should you choose the MONEY or DECIMAL(x,y) datatypes in SQL Server?
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Never ever should you use money. It is not precise, and it is pure garbage; always use decimal/numeric.
Run this to see what I mean:
DECLARE
@mon1 MONEY,
@mon2 MONEY,
@mon3 MONEY,
@mon4 MONEY,
@num1 DECIMAL(19,4),
@num2 DECIMAL(19,4...
Why are floating point numbers inaccurate?
...s, floating point numbers are represented a lot like scientific notation: with an exponent and a mantissa (also called the significand). A very simple number, say 9.2, is actually this fraction:
5179139571476070 * 2 -49
Where the exponent is -49 and the mantissa is 5179139571476070. The reason...