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How do I trim leading/trailing whitespace in a standard way?
...hitespace from a string in C? I'd roll my own, but I would think this is a common problem with an equally common solution.
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How to save/restore serializable object to/from file?
I have a list of objects and I need to save that somewhere in my computer. I have read some forums and I know that the object has to be Serializable . But it would be nice if I can get an example. For example if I have the following:
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SQL Server insert if not exists best practice
I have a Competitions results table which holds team member's names and their ranking on one hand.
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Catch multiple exceptions at once?
...atch those exceptions and do some log messaging, but only those you expect coming from your file IO methods. Then you often have to deal with a larger number (about 5 or more) different types of exceptions. In that situation, this approach can save you some lines.
– Xilconic
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What are the best practices for using a GUID as a primary key, specifically regarding performance?
...l want to use the GUIDs as the Primary Keys, but I was thinking of using a Composite Primary Key (The GUID and maybe another field.)
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How to iterate over arguments in a Bash script
I have a complex command that I'd like to make a shell/bash script of. I can write it in terms of $1 easily:
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How are Python's Built In Dictionaries Implemented?
... together (probably more than anyone would like to know; but the answer is comprehensive).
Python dictionaries are implemented as hash tables.
Hash tables must allow for hash collisions i.e. even if two distinct keys have the same hash value, the table's implementation must have a strategy to inse...
Explaining Python's '__enter__' and '__exit__'
...ble to call other methods on self object as explained here : stackoverflow.com/questions/38281853/… 2) self.XYZ is just part of self object and returning handle only to just that seems inappropriate to me from maintenance point of view. I would rather prefer to return handle to complete object and...
What REALLY happens when you don't free after malloc?
...d when you're done. Also, database handles should have their transactions committed and then closed when you're done with them. Similarly, if you're using an object oriented language like C++ or Objective C, not freeing an object when you're done with it will mean the destructor will never get cal...
Java: difference between strong/soft/weak/phantom reference
...When an object in memory is reachable only by Weak Reference Objects, it becomes automatically eligible for GC.
Levels of Weakness
Two different levels of weakness can be enlisted: soft and phantom.
A soft Reference Object is basically a weak Reference Object that remains in memory a bit more: n...