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How do I check for C++11 support?
...etect at compile-time if the compiler supports certain features of C++11? For example, something like this:
8 Answers
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Transpose/Unzip Function (inverse of zip)?
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notice: you can meet memory and performance issues with very long lists.
– Laurent LAPORTE
Oct 14 '16 at 12:44
1
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Using AES encryption in C#
... rijAlg.IV = IV;
// Create a decryptor to perform the stream transform.
ICryptoTransform encryptor = rijAlg.CreateEncryptor(rijAlg.Key, rijAlg.IV);
// Create the streams used for encryption.
using (MemoryStream msEncrypt...
Where should signal handlers live in a django project?
...se remote events? The question is how to ensure the listeners are loaded before the emitters.
– John Mee
May 4 '11 at 2:02
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What is the difference between old style and new style classes in Python?
...a
new-style class instance is permitted to override the value returned
for x.__class__).
The major motivation for introducing new-style classes is to provide a unified object model with a full meta-model.
It also has a number of immediate benefits, like the ability to
subclass most ...
Is it intended by the C++ standards committee that in C++11 unordered_map destroys what it inserts?
...g in libstdc++, which is now fixed according to a comment on the question. For those curious, I took a look at the g++-4.8 headers.
bits/stl_map.h, lines 598-603
template<typename _Pair, typename = typename
std::enable_if<std::is_constructible<value_type,
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How to print a query string with parameter values when using Hibernate
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You need to enable logging for the the following categories:
org.hibernate.SQL - set to debug to log all SQL DML statements as they are executed
org.hibernate.type - set to trace to log all JDBC parameters
So a log4j configuration could look li...
Best way to require all files from a directory in ruby?
... It's probably safer to use File.join rather than making assumptions about forward/backward slashes: Dir[File.join(File.dirname(__FILE__), 'lib', '*.rb')].each {|file| require file }
– Chris
Jul 6 '12 at 23:22
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sqlalchemy: how to join several tables by one query?
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A good style would be to setup some relations and a primary key for permissions (actually, usually it is good style to setup integer primary keys for everything, but whatever):
class User(Base):
__tablename__ = 'users'
email = Column(String, primary_key=True)
name = Column(St...
Greenlet Vs. Threads
... in userspace, and that's typically CPU-heavy stuff. Concurrency is useful for breaking apart problems, enabling different parts to be scheduled and managed more easily in parallel.
Greenlets really shine in network programming where interactions with one socket can occur independently of interacti...