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mysql - how many columns is too many?
...eral rule, your table structure should reflect your domain model; if you really do have 70 (100, what have you) attributes that belong to the same entity there's no reason to separate them into multiple tables.
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How to wait for all threads to finish, using ExecutorService?
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Basically on an ExecutorService you call shutdown() and then awaitTermination():
ExecutorService taskExecutor = Executors.newFixedThreadPool(4);
while(...) {
taskExecutor.execute(new MyTask());
}
taskExecutor.shutdown();
try {
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jQuery or javascript to find memory usage of page
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2015 Update
Back in 2012 this wasn't possible, if you wanted to support all major browsers in-use. Unfortunately, right now this is still a Chrome only feature (a non-standard extension of window.performance).
window.performance.memory
Browser support: Chrome 6+
2012 Answer
Is there a w...
How to frame two for loops in list comprehension python
...ehension. (Perfectly matches the 79 character limit too (without the list call))
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Qt events and signal/slots
... and handled by
any instance of a QObject subclass,
but they are especially relevant to
widgets. This document describes how
events are delivered and handled in a
typical application.
So events and signal/slots are two parallel mechanisms accomplishing the same things. In general, an eve...
Trim last character from a string
...ut this does not fulfill the definition of Trim method.
Trim - Removes all occurrences of
white space characters from the
beginning and end of this instance.
MSDN-Trim
Under this definition removing only last character from string is bad solution.
So if we want to "Trim last character ...
What are the effects of exceptions on performance in Java?
Question: Is exception handling in Java actually slow?
18 Answers
18
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How to remove folders with a certain name
...t this, find will still try to visit the now missing folder and will eventually exit with an error code, which can e.g. fail a Docker build.
– Czyzby
Mar 18 at 13:19
add a com...
Getting all file names from a folder using C# [duplicate]
I wanted to know if it is possible to get all the names of text files in a certain folder.
7 Answers
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How good is Java's UUID.randomUUID?
...UID uses java.security.SecureRandom, which is supposed to be "cryptographically strong". While the actual implementation is not specified and can vary between JVMs (meaning that any concrete statements made are valid only for one specific JVM), it does mandate that the output must pass a statistical...