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When would you use a WeakHashMap or a WeakReference?
...r seen an implementation of so I'm trying to figure out what the use case for them is and how the implementation would work. When have you needed to use a WeakHashMap or WeakReference and how was it used?
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Good or bad practice? Initializing objects in getter
I have a strange habit it seems... according to my co-worker at least. We've been working on a small project together. The way I wrote the classes is (simplified example):
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Regex to match only letters
...es one letter from A–Z in lowercase and uppercase. [a-zA-Z]+ matches one or more letters and ^[a-zA-Z]+$ matches only strings that consist of one or more letters only (^ and $ mark the begin and end of a string respectively).
If you want to match other letters than A–Z, you can either add them ...
Python argparse: default value or specified value
...ault to a value if only the flag is present with no value specified, but store a user-specified value instead of the default if the user specifies a value. Is there already an action available for this?
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Why isn't Python very good for functional programming? [closed]
...t get much of a mention in this question, and when it was mentioned, it normally wasn't very positive. However, not many reasons were given for this (lack of pattern matching and algebraic data types were mentioned). So my question is: why isn't Python very good for functional programming? Are the...
PHP 5: const vs static
...assName::$my_var = 20; // now equals 20
ClassName::MY_CONST = 20; // error! won't work.
Public, protected, and private are irrelevant in terms of consts (which are always public); they are only useful for class variables, including static variable.
public static variables can be accessed anyw...
Big O of JavaScript arrays
...ex operations to resize. It seems that JavaScript makes it easy to write poorly performing array code. This leads to the question:
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Good Free Alternative To MS Access [closed]
...need to develop a lightweight desktop DB application on the Microsoft platforms.
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“std::endl” vs “\n”
...uming the file is open in text mode, which is what you get unless you ask for binary. The compiled program will write out the correct thing for the system compiled for.
The only difference is that std::endl flushes the output buffer, and '\n' doesn't. If you don't want the buffer flushed frequent...
What is external linkage and internal linkage?
...efers to things that exist beyond a particular translation unit. In other words, accessible through the whole program, which is the combination of all translation units (or object files).
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