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How do I show the changes which have been staged?
I staged a few changes to be committed; how can I see the diff of all files which are staged for the next commit? I'm aware of git status , but I'd like to see the actual diffs - not just the names of files which are staged.
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insert vs emplace vs operator[] in c++ map
... I will start explaining those.
The operator[] is a find-or-add operator. It will try to find an element with the given key inside the map, and if it exists it will return a reference to the stored value. If it does not, it will create a new element inserted in place with default initialization and...
How do I disable form fields using CSS?
Is it possible to disable form fields using CSS? I of course know about the attribute disabled, but is it possible to specify this in a CSS rule? Something like -
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Performance surprise with “as” and nullable types
I'm just revising chapter 4 of C# in Depth which deals with nullable types, and I'm adding a section about using the "as" operator, which allows you to write:
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Python __call__ special method practical example
...method nicely to implement a consistent API for form validation. You can write your own validator for a form in Django as a function.
def custom_validator(value):
#your validation logic
Django has some default built-in validators such as email validators, url validators etc., which broadly fa...
Sharing link on WhatsApp from mobile website (not application) for Android
I have developed a website which is mainly used in mobile phones.
I want to allow users to share information directly from the web page into WhatsApp.
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What is HEAD in Git?
You see the Git documentation saying things like
21 Answers
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Is there a “do … until” in Python? [duplicate]
..., taken from the link above.
while True:
do_something()
if condition():
break
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What is Weak Head Normal Form?
...ed out, head normal form does not apply to Haskell, so I will not consider it here.
Normal form
An expression in normal form is fully evaluated, and no sub-expression could be evaluated any further (i.e. it contains no un-evaluated thunks).
These expressions are all in normal form:
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(2, "hello...
C++: What is the size of an object of an empty class?
I was wondering what could be the size of an object of an empty class . It surely could not be 0 bytes since it should be possible to reference and point to it like any other object. But, how big is such an object?
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