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Format numbers to strings in Python
...ntro book and the slides for the Intro+Intermediate Python courses I offer from time-to-time. :-)
Aug 2018 UPDATE: Of course, now that we have the f-string feature in 3.6, we need the equivalent examples of that, yes another alternative:
>>> name, age = 'John', 35
>>> f'Name: {na...
Command to get nth line of STDOUT
...
From sed1line:
# print line number 52
sed -n '52p' # method 1
sed '52!d' # method 2
sed '52q;d' # method 3, efficient on large files
From awk1line:
# print line number 52...
What is the difference between “Flush Magento Cache” and “Flush Cache Storage” in magento's cache ma
...ding to its associated Magento tag.
Flush Cache Storage:
Remove all items from the cache regardless Magento tag. If you used another location used by other application will be removed in this process.
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“:” (colon) in C struct - what does it mean? [duplicate]
...r after the colon describes how many bits that field uses. Here is a quote from MSDN describing bit fields:
The constant-expression specifies the width of the field in bits. The
type-specifier for the declarator must be unsigned int, signed int, or
int, and the constant-expression must be a ...
How to stop event propagation with inline onclick attribute?
...
There are two ways to get the event object from inside a function:
The first argument, in a W3C-compliant browser (Chrome, Firefox, Safari, IE9+)
The window.event object in Internet Explorer (<=8)
If you need to support legacy browsers that don't follow the W3C...
Convert a python dict to a string and back
... @AJ00200: and the ast.literal_eval alternative I mentioned?. From the Python help: "Safely evaluate an expression node or a string containing a Python expression. The string or node provided may only consist of the following Python literal structures: strings, numbers, tuples, lists, d...
Writing a Python list of lists to a csv file
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For Python 3 compatibility, remove the "b" from "wb".
– Vlad V
May 14 '15 at 11:54
28
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Calling C++ class methods via a function pointer
...called a "class method" or a "static member function". The main difference from a non-member function is that, if you reference it from outside the class, you must specify the scope using the :: scope resolution operator. For example, to get the function pointer, use &myclass::myfunction and to ...
Python logging not outputting anything
... (logger1 is logger2) == True
# Convenient methods in order of verbosity from highest to lowest
logger.debug("this will get printed")
logger.info("this will get printed")
logger.warning("this will get printed")
logger.error("this will get printed")
logger.critical("this will get printed")
# In l...
An async/await example that causes a deadlock
...issue again in an ASP.NET MVC project. When you want to call async methods from a PartialView, you're not allowed to make the PartialView async. You'll get an exception if you do.
You can use the following simple workaround in the scenario where you want to call an async method from a sync method:
...