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Misconceptions about and, or, &&, and ||
Everyone should read this wonderful post by Avdi Grimm about âandâ and âorâ operators in Ruby. IMHO they are underutilized, partly in thanks to style guides that say âNEVER USE THESE!!!â. You absolutely should use them when it is the right time and place. As Avdi mentions, they are wonderful control-flow operators, so donât shy away!
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Fixed How to avoid "if" chains? #dev #it #asnwer
Fixed How to avoid "if" chains? #dev #it #asnwer
How to avoid "if" chains?
Assuming I have this pseudo-code:
bool conditionA = executeStepA(); if (conditionA){ bool conditionB = executeStepB(); if (conditionB){ bool conditionC = executeStepC(); if (conditionC){ ... } } } executeThisFunctionInAnyCase();
Functions executeStepX should be executed if and only if the previous succeed. In any case, the executeThisFunctionInAnyCasefunction should beâŚ
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How to: How to break out of multiple loops in Python?
How to: How to break out of multiple loops in Python?
How to break out of multiple loops in Python?
Given the following code (that doesnât work):
while True: #snip: print out current state while True: ok = get_input("Is this ok? (y/n)") if ok == "y" or ok == "Y": break 2 #this doesn't work :( if ok == "n" or ok == "N": break #do more processing with menus and stuff
Is there a way to make this work? Or do I have do one check to break out of theâŚ
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Rainbowdragoneyes @ Control-Flow by Ugly Machine on Flickr.
Chicazul @ Control-Flow by Ugly Machine on Flickr.
Anya is live and ready to show you everything. Watch her strip, dance, and perform exclusive shows just for you. Interact in real-time and make your fantasies come true.
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Bit Shifter @ Control-Flow by Ugly Machine on Flickr.
While loops, in general, are meant to have an indefinite number of iterations...and for loops should have a more definite number of iterations.
http://stackoverflow.com/questions/3875114/why-use-a-for-loop-instead-of-a-while-loop
My full set of photos from the 09.08.2012 Control-Flow are now on Flickr! This includes âb-sidesâ and Polaroids that didnât go up on my Falsebit, so please give it a look. You can see them here.
