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Java GUI frameworks. What to choose? Swing, SWT, AWT, SwingX, JGoodies, JavaFX, Apache Pivot? [close
...dget. However, JavaFX 2.2 (for Java 7) lacks this, and also lacks standard error and info dialgos: see stackoverflow.com/a/12760202/105137 . Also the ControlsFX widget library is available for Java 8 only: fxexperience.com/controlsfx
– kostmo
Sep 3 '13 at 7:16
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What is a None value?
...t recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'F' is not defined
and that NameError means Python doesn't recognize the name F, because there is no such sticker. If Briggs were right and F = None resets F to its original state, then it should be there now, ...
Using do block vs braces {}
...s of code:
1.upto 3 do |x|
puts x
end
1.upto 3 { |x| puts x }
# SyntaxError: compile error
Second example only works when parentheses is used, 1.upto(3) { |x| puts x }
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How to implement common bash idioms in Python? [closed]
...so on. You can easily copy big parts of existing bash scripts and e.g. add error handling in the python way :)
And here is my result:
#!/usr/bin/env ipython3
# *** How to have the most comfort scripting experience of your life ***
# #################################################################...
Why is address zero used for the null pointer?
...g or starting up). Programmers used this hardware protection as a form of error detection in their software, letting the CPU's address decode logic check for uninitialized or invalid pointers instead of having to spend CPU instructions to do it. The convention remains to this day, even though the ...
Git ignore file for Xcode projects
...
# -- UNVERIFIED: c.f. http://stackoverflow.com/a/50283/153422
#
#tm_build_errors
####
# UNKNOWN: recommended by others, but I can't discover what these files are
#
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What does the Q_OBJECT macro do? Why do all Qt objects need this macro?
...eral member functions that are implemented by the moc; if you get compiler errors along the lines of "undefined reference to vtable for LcdNumber", you have probably forgotten to run the moc or to include the moc output in the link command.
...
Set every cell in matrix to 0 if that row or column contains a 0
... row and column are both 1s.
Coding it will be tricky to avoid off-by-one errors etc but it should work in one pass.
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Why does the default parameterless constructor go away when you create one with parameters
...ructor that ensures the class' invariant" and it would raise a compilation error.
– Jon Hanna
Aug 26 '12 at 12:23
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Shall we always use [unowned self] inside closure in Swift
... here
networkManager.fetch(query: query) { [weak self] (results, error) in
self?.updateUI() // could be called any time after vc closes
}
}
@IBAction func buttonPress(self: Any) {
buttonPressClosure()
}
// rest of class below.
}
...