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What does the ??!??! operator do in C?
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??! is a trigraph that translates to |. So it says:
!ErrorHasOccured() || HandleError();
which, due to short circuiting, is equivalent to:
if (ErrorHasOccured())
HandleError();
Guru of the Week (deals with C++ but relevant here), where I picked this up.
Possible origin o...
Select element by exact match of its content
...right, I wonder if there is a way to make the :contains() jQuery's selector to select elements with only the string that is typed in
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Make a negative number positive
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Just call Math.abs. For example:
int x = Math.abs(-5);
Which will set x to 5.
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Why do x86-64 systems have only a 48 bit virtual address space?
... 256 terabyte. That's a lot. You're not going to see a system which needs more than that any time soon.
So CPU manufacturers took a shortcut. They use an instruction set which allows a full 64-bit address space, but current CPUs just only use the lower 48 bits. The alternative was wasting transisto...
Use URI builder in Android or create URL with variables
I'm developing an Android app. I need to build a URI for my app to make an API request. Unless there's another way to put a variable in a URI, this is the easiest way I've found. I found that you need to use Uri.Builder , but I'm not quite sure how to. My url is:
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How to Select Columns in Editors (Atom,Notepad++, Kate, VIM, Sublime, Textpad,etc) and IDEs (NetBean
How to select columns in Editors and IDEs to columnar delete, insert or replace some characters ?
21 Answers
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“Could not run curl-config: [Errno 2] No such file or directory” when installing pycurl
... edited Nov 11 '18 at 18:55
Boris
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answered Jun 5 '14 at 3:14
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Should a RESTful 'PUT' operation return something
...that are applicable. Here is my interpretation:
HTTP status code 200 OK for a successful PUT of an update to an
existing resource. No response body needed. (Per Section 9.6, 204 No Content is even more appropriate.)
HTTP status code 201 Created for a successful PUT of a new
resource, with the most...
How to use Java property files?
I have a list of key/value pairs of configuration values I want to store as Java property files, and later load and iterate through.
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Dynamically set local variable [duplicate]
...swers already posted you cannot modify locals() directly and expect it to work.
>>> def foo():
lcl = locals()
lcl['xyz'] = 42
print(xyz)
>>> foo()
Traceback (most recent call last):
File "<pyshell#6>", line 1, in <module>
foo()
File "<pyshell#...