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Remove an item from a dictionary when its key is unknown
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@Buttons840 they are called dict comprehensions in PEP 274 or dictionary displays. as the PEP says they were added in 2.7 as backported 3.x feats. alternatively you can feed dict() with an appropriate generator expression, which is 2.4. meta: can...
How to create border in UIButton?
...CristianChaparroA. The reason is that prepareForInterfaceBuilder only gets called from IB, not when you run the app. So also set the UIEdgeInsets in awakeFromNib, then it will show also when running the app.
– Samuël
Jan 20 '18 at 20:17
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Getting rid of \n when using .readlines() [duplicate]
...hitespace at the start and end of your lines, then the big heavy hammer is called .strip().
However, since you are reading from a file and are pulling everything into memory anyway, better to use the str.splitlines() method; this splits one string on line separators and returns a list of lines with...
Is it possible to figure out the parameter type and return type of a lambda?
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Heh, I was just writing this. Didn't think about tuple_element though, thanks.
– GManNickG
Oct 30 '11 at 7:30
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How can I use if/else in a dictionary comprehension?
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You've already got it: A if test else B is a valid Python expression. The only problem with your dict comprehension as shown is that the place for an expression in a dict comprehension must have two expressions, separated by a colon:
{ (some_key if condition else default_...
How do I provide custom cast support for my class?
How do I provide support for casting my class to other types? For example, if I have my own implementation of managing a byte[] , and I want to let people cast my class to a byte[] , which will just return the private member, how would I do this?
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What's the standard way to work with dates and times in Scala? Should I use Java types or there are
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Video scalaj: Idiomatic Scala Wrappers for Java Libraries days2010.scala-lang.org/node/138/164
– oluies
Sep 1 '10 at 1:48
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How do I make my string comparison case insensitive?
... to doing your .equals or .equalsIgnoreCase.
A null String object can not call an equals method.
ie:
public boolean areStringsSame(String str1, String str2)
{
if (str1 == null && str2 == null)
return true;
if (str1 == null || str2 == null)
return false;
return...
Python extract pattern matches
...th a standard python REPL, the last result is stored in a special variable called _. It isn't valid outside anywhere else.
– UltraInstinct
Mar 13 '19 at 2:25
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How to get the first five character of a String
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You can save a call to ToArray() by using String.Concat() like so: string firstFivChar = String.Concat(yourStringVariable.Take(5));
– BlueFuzzyThing
Aug 14 '19 at 17:44
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