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What are the effects of exceptions on performance in Java?
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It depends how exceptions are implemented. The simplest way is using setjmp and longjmp. That means all registers of the CPU are written to the stack (which already takes some time) and possibly some other data needs to be cr...
PATH issue with pytest 'ImportError: No module named YadaYadaYada'
I used easy_install to install pytest on a mac and started writing tests for a project with a file structure likes so:
20 A...
Why is there an “Authorization Code” flow in OAuth2 when “Implicit” flow works so well?
With the "Implicit" flow the client (likely a browser) will get a access token, after the Resource Owner (i.e. the user) gave access.
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Why do we need boxing and unboxing in C#?
...resent their underlying data (e.g., an int is just a bucket of thirty-two bits which is completely different than a reference type).
Think of it like this. You have a variable o of type object. And now you have an int and you want to put it into o. o is a reference to something somewhere, and the i...
How to implement WiX installer upgrade?
...f using your own.
For example, we use this code to do automatic upgrades. It prevents downgrades, giving a localised error message, and also prevents upgrading an already existing identical version (i.e. only lower versions are upgraded):
<MajorUpgrade
AllowDowngrades="no" DowngradeErrorMes...
What is meant with “const” at end of function declaration? [duplicate]
I got a book, where there is written something like:
6 Answers
6
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Most efficient T-SQL way to pad a varchar on the left to a certain length?
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This is simply an inefficient use of SQL, no matter how you do it.
perhaps something like
right('XXXXXXXXXXXX'+ rtrim(@str), @n)
where X is your padding character and @n is the number of characters in the resulting string (assuming you need the padding because you are dealing with ...
How to put a delay on AngularJS instant search?
...rformance issue that I can't seem to address. I have an instant search but it's somewhat laggy, since it starts searching on each keyup() .
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How do I invoke a Java method when given the method name as a string?
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Coding from the hip, it would be something like:
java.lang.reflect.Method method;
try {
method = obj.getClass().getMethod(methodName, param1.class, param2.class, ..);
} catch (SecurityException e) { ... }
catch (NoSuchMethodException e) { .....
When NOT to use Cassandra?
...ke a silver bullet, everything is built to solve specific problems and has its own pros and cons. It is up to you, what problem statement you have and what is the best fitting solution for that problem.
I will try to answer your questions one by one in the same order you asked them. Since Cassandra...