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Is it worth using Python's re.compile?
...al dict type).
From module re.py (comments are mine):
def match(pattern, string, flags=0):
return _compile(pattern, flags).match(string)
def _compile(*key):
# Does cache check at top of function
cachekey = (type(key[0]),) + key
p = _cache.get(cachekey)
if p is not None: retur...
What is the most efficient/elegant way to parse a flat table into a tree?
... sets (sometimes referred to as Modified Pre-order Tree Traversal) you can extract the entire tree structure or any subtree within it in tree order with a single query, at the cost of inserts being more expensive, as you need to manage columns which describe an in-order path through thee tree struct...
Entity Attribute Value Database vs. strict Relational Model Ecommerce
... @Zim, that sounds pretty much like option 3. Each row has 1-n extra "generic" columns, and the data stored in them is interpreted at the application level. You get the performance benefit of having all the data for one record in one place. The metadata about those columns needs to be st...
Get list of passed arguments in Windows batch script (.bat)
...to a function %0 and also in %~0 contains the function name (or better the string that was used to call the function).
But with %~f0 you still can recall the filename.
@echo off
echo main %0, %~0, %~f0
call :myLabel+xyz
exit /b
:MYlabel
echo func %0, %~0, %~f0
exit /b
Output
main test.bat, test...
Numpy index slice without losing dimension information
...
The example is missing extra brackets for the tuple in the assignment to b; it should be b = np.zeros((100,10)).
– Jerzy
Mar 17 '17 at 20:18
...
How can I access a JavaScript object which has spaces in the object's key?
...metimes called associative arrays since each property is associated with a string value that can be used to access it. So, for example, you could access the properties of the myCar object as follows:
myCar['make'] = 'Ford';
myCar['model'] = 'Mustang';
myCar['year'] = 1969;
For more, read on at Wo...
Read text file into string array (and write)
The ability to read (and write) a text file into and out of a string array is I believe a fairly common requirement. It is also quite useful when starting with a language removing the need initially to access a database. Does one exist in Golang?
e.g.
...
C++ - passing references to std::shared_ptr or boost::shared_ptr
...a message somewhere. It may be a large message so rather than using a std::string that likely gets copied as it is passed around to multiple places, we use a shared_ptr to a string:
void send_message(std::shared_ptr<std::string> msg)
{
std::cout << (*msg.get()) << std::endl;
}...
No serializer found for class org.hibernate.proxy.pojo.javassist.Javassist?
...
Solves the problem but json will contain two extra unneeded properties "handler":{},"hibernateLazyInitializer":{}
– prettyvoid
Mar 28 '16 at 10:48
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How do you execute an arbitrary native command from a string?
...ress my need with the following scenario: Write a function that accepts a string to be run as a native command.
4 Answer...