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How do you get the logical xor of two variables in Python?
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@Token why not. Do you mean because they aren't very Pythonic?
– orokusaki
Jan 25 '10 at 6:42
1
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E731 do not assign a lambda expression, use a def
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def f(x): return 2*x
No:
f = lambda x: 2*x
The first form means that the name of the resulting
function object is specifically 'f' instead of the generic '<lambda>'.
This is more useful for tracebacks and string representations in
general. The use of the assignment state...
Git merge reports “Already up-to-date” though there is a difference
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The message “Already up-to-date” means that all the changes from the branch you’re trying to merge have already been merged to the branch you’re currently on. More specifically it means that the branch you’re trying to merge is a parent of your current...
Should unit tests be written for getter and setters?
...t tests are there to test the behaviour of your code, in an expressive and meaningful way, and getters/setters are only a means to an end. If you tests use the getters/setters to achieve their goal of testing the "real" functionality, then that's good enough.
If, on the other hand, your getters an...
Why is String immutable in Java?
...bjects change their state).
That being said, immutability of String only means you cannot change it using its public API. You can in fact bypass the normal API using reflection. See the answer here.
In your example, if String was mutable, then consider the following example:
String a="stack";
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How to replace a character by a newline in Vim
...l-character to use to represent a newline?
B: Either q (because it usually means "Quit") or v because it would be so easy to type Ctrl + C by mistake and kill the editor.
A: Make it so.
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imp...
Inserting a text where cursor is using Javascript/jquery
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Use this, from here:
function insertAtCaret(areaId, text) {
var txtarea = document.getElementById(areaId);
if (!txtarea) {
return;
}
var scrollPos = txtarea.scrollTop;
var strPos = 0;
var br = ((txtarea.selectionStart || txtarea.selectionStart == '...
JavaScript - Replace all commas in a string [duplicate]
...test"; mystring.replace(/\./g , "|"); See MDN RegExp - Special characters meaning in regular expressions
– Julian Soro
Aug 1 '16 at 23:21
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Clear text from textarea with selenium
...that the proper error message appears when text in certain fields are invalid. One check for validity is that a certain textarea element is not empty.
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RAII and smart pointers in C++
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So, what's wrong with that? Well, the return type is std::string - so it means we're returning by value. This means that we copy str and actually return the copy. This can be expensive, and we might want to avoid the cost of copying it. Therefore, we might come up with idea of returning by referen...