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Entity Framework 4 vs NHibernate [closed]
...ibility in inheritance mapping, better integration with stored procs / database functions / custom SQL / triggers, support for formula properties and so on. IMO it's basically just more mature as an ORM.
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WCF service startup error “This collection already contains an address with scheme http”
...;system.serviceModel>
<serviceHostingEnvironment>
<baseAddressPrefixFilters>
<add prefix="net.tcp://payroll.myorg.com:8000"/>
<add prefix="http://shipping.myorg.com:9000"/>
</baseAddressPrefixFilters>
</serviceHostin...
What is “entropy and information gain”?
...d male or female, given the example that reached the node. We calculate it
based on the number of male and female classes at the node.
Entropy on the other hand is a measure of impurity (the opposite). It is defined for a binary class with values a/b as:
Entropy = - p(a)*log(p(a)) - p(b)*log(p(b))...
Regex: match everything but specific pattern
...ttern (e.g. any - empty, too - string not starting with foo):
Lookahead-based solution for NFAs:
^(?!foo).*$
^(?!foo)
Negated character class based solution for regex engines not supporting lookarounds:
^(([^f].{2}|.[^o].|.{2}[^o]).*|.{0,2})$
^([^f].{2}|.[^o].|.{2}[^o])|^.{0,2}$
a string ...
Is there a working C++ refactoring tool? [closed]
...ully featured refactoring tool for C++ that works reliably with large code bases (some 100.000 lines)?
19 Answers
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CORS Access-Control-Allow-Headers wildcard being ignored?
...C-PEP, C-PEP-Info, CONNECT, Cache-Control, Compliance, Connection, Content-Base, Content-Disposition, Content-Encoding, Content-ID, Content-Language, Content-Length, Content-Location, Content-MD5, Content-Range, Content-Script-Type, Content-Security-Policy, Content-Style-Type, Content-Transfer-Encod...
How can I convert a std::string to int?
...eric_only(): std::ctype<char>(get_table()) {}
static std::ctype_base::mask const* get_table()
{
static std::vector<std::ctype_base::mask>
rc(std::ctype<char>::table_size,std::ctype_base::space);
std::fill(&rc['0'], &rc[':'], std::ctype...
How to take column-slices of dataframe in pandas
... is deprecated. Use .loc
See the deprecation in the docs
.loc uses label based indexing to select both rows and columns. The labels being the values of the index or the columns. Slicing with .loc includes the last element.
Let's assume we have a DataFrame with the following columns:
foo, ba...
Set a persistent environment variable from cmd.exe
...set APCA_API_KEY_ID=key_id
set APCA_API_SECRET_KEY=secret_key
set APCA_API_BASE_URL=https://paper-api.alpaca.markets
:: setx also for other windows and processes going forward
setx APCA_API_KEY_ID %APCA_API_KEY_ID%
setx APCA_API_SECRET_KEY %APCA_API_SECRET_KEY%
setx APCA_API_BASE_URL %APCA_AP...
Compare two objects' properties to find differences?
... being derived from Type T)
/// we will cast both objects down to the base Type T to ensure the property comparison is only
/// completed on COMMON properties.
/// (ex. Type T is Foo, object1 is GoodFoo and object2 is BadFoo -- both being inherited from Foo --
/// both objects will...