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How does OpenID authentication work?
...bsites.
How it works?
You can see the Flow of operation here (image)
Step-by-step activities here
Step-by-step activities here (other blog)
Steps
User connects to OpenID enabled website.
User enters credential information.
A POST is made with a BASE64 (website to provider)
An answer is built (tha...
Is cout synchronized/thread-safe?
...ation) are guaranteed to be mutually exclusive, the buffer might be shared by the different threads. This will quickly lead to corruption of the internal state of the stream.
And even if access to the buffer is guaranteed to be thread-safe, what do you think will happen in this code?
// in one thr...
How can I drop all the tables in a PostgreSQL database?
...ated in the comments, you might want to filter the tables you want to drop by schema name:
select 'drop table if exists "' || tablename || '" cascade;'
from pg_tables
where schemaname = 'public'; -- or any other schema
And then run it.
Glorious COPY+PASTE will also work.
...
Override intranet compatibility mode IE8
By default IE8 forces intranet websites into compatibility mode. I tried changing the meta header to IE8, but it doesn't acknowledge the meta header and just uses the browser setting. Does anyone know how to disable this?
...
CMake unable to determine linker language with C++
...project supports.
Example languages are CXX (i.e. C++), C, Fortran, etc. By default C
and CXX are enabled. E.g. if you do not have a C++ compiler, you can
disable the check for it by explicitly listing the languages you want
to support, e.g. C. By using the special language "NONE" all checks...
How to speed up insertion performance in PostgreSQL
... no practical limit AFAIK, but batching will let you recover from an error by marking the start of each batch in your input data. Again, you seem to be doing this already.
Use synchronous_commit=off and a huge commit_delay to reduce fsync() costs. This won't help much if you've batched your work int...
Check whether number is even or odd
...
@crush n % 2 == 0 semantically means Divide by 2 and check if the remainder is 0, which is much clearer than n & 1 == 0 which means Zero all the bits but leave the least significant bit unchanged and check if the result is 0. The improved clarity of the first is wo...
Purpose of Python's __repr__
...ng a printable representation of an object. This is the same value yielded by conversions (reverse quotes). It is sometimes useful to be able to access this operation as an ordinary function. For many types, this function makes an attempt to return a string that would yield an object with the same v...
Python vs Cpython
...t an implementation detail, really. CPython compiles your Python code into bytecode (transparently) and interprets that bytecode in a evaluation loop.
CPython is also the first to implement new features; Python-the-language development uses CPython as the base; other implementations follow.
What abo...
Where are ${EXECUTABLE_NAME} and ${PRODUCT_NAME} defined
...the target's Build Settings in the Packaging section. It has the same name by default as your project.
Edit:
While PRODUCT_NAME is by default the name of the Target (MyDemoApp in this case). The EXECUTABLE_NAME is a concatenation of:
$EXECUTABLE_PREFIX, $PRODUCT_NAME and $EXECUTABLE_SUFFIX.
Se...