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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 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...
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...
Laravel orderBy on a relationship
I am looping over all comments posted by the Author of a particular post.
2 Answers
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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...
In SQL, what's the difference between count(column) and count(*)?
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@tsilb: The answer posted by @Alan states "count(*) is computed by looking at the indexes on the table in question rather than the actual data rows" which, if true, invalidates your comment. I appreciate that @Alan may be wrong but I'm interested in t...
How to negate specific word in regex? [duplicate]
...onstruct is the pair of parentheses, with the opening parenthesis followed by a question mark and an exclamation point. Inside the lookahead [is any regex pattern].
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How do you add an in-app purchase to an iOS application?
...wift in your app, you can do the following:
Create a new .h (header) file by going to File > New > File... (Command ⌘ + N). This file will be referred to as "Your .h file" in the rest of the tutorial
When prompted, click Create Bridging Header. This will be our bridging header file. If you...
window.onload vs
...event called DOMContentLoaded which fires earlier, but it is not supported by IE (at the time of writing this answer). I'd recommend using a javascript library which supports a cross browser DOMContentLoaded feature, or finding a well written function you can use. jQuery's $(document).ready(), is ...
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
...le . The system data ( _allData ) is refreshed once in a while and I do it by creating another object called newData and fill it's data structures with new data. When it's done I just assign
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