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Error “initializer element is not constant” when trying to initialize variable with const
...for a compiler to extend this (6.6/10 - An implementation may accept other forms of constant expressions) but that would limit portability.
If you can change my_foo so it does not have static storage, you would be okay:
int main()
{
foo_t my_foo = foo_init;
return 0;
}
...
Does “untyped” also mean “dynamically typed” in the academic CS world?
...the latter is a (technically misleading) name for a particular case of the former.
PS: And FWIW, I happen to be both an academic researcher in type systems, and a non-academic implementer of JavaScript, so I have to live with the schisma. :)
...
How to save/restore serializable object to/from file?
... XML or Json serialization. Here are the functions to do it in the various formats. See my blog post for more details.
Binary
/// <summary>
/// Writes the given object instance to a binary file.
/// <para>Object type (and all child types) must be decorated with the [Serializable] attri...
SQL Server insert if not exists best practice
... the qquestion on SO. But the core of my thought is: How well will this perform against rebuilding the names table from scratch once a week or so? (remember this only takes a few seconds)
– Didier Levy
Mar 14 '11 at 12:35
...
Is it possible to make relative link to image in a markdown file in a gist?
...'t just use the first URL and trust it to always work.
Currently neither form returns a redirect, nor serves a rel=canonical link. I wouldn't bet on Github to never change this!
All internal gist links (e.g. from user's page https://gist.github.com/cben/) omit the trailing slash :-(
Gists in Goog...
python max function using 'key' and lambda expression
...Example 1:
A simple example, suppose you have a list of numbers in string form, but you want to compare those items by their integer value.
>>> lis = ['1', '100', '111', '2']
Here max compares the items using their original values (strings are compared lexicographically so you'd get '2'...
MySQL vs MongoDB 1000 reads
...corporate it into their codebase.
People are seeing real world MongoDB performance largely because MongoDB allows you to query in a different manner that is more sensible to your workload.
For example, consider a design that persisted a lot of information about a complicated entity in a normalised...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...bar. However, if you have a lot of quotes in your string these alternative forms can get hard to read (and therefore hard to maintain). This page provides a good introduction to quoting in Bash.
Arrays ($var vs. $var[@] vs. ${var[@]})
Now for your array. According to the bash manual:
Referenci...
Explaining Python's '__enter__' and '__exit__'
...ock, addrs):
>>> logging.basicConfig(level=logging.DEBUG, format='%(asctime)s \
>>> : %(levelname)s --> %(message)s')
>>> logging.info('Initiating My connection')
>>> self.sock = sock
>>> self.addrs = addrs
>&...
MySQL ON vs USING?
... +1 Nice answer on the syntactical difference. I'm curious about performance differences, if any. I imagine USING interprets to ON.
– Jason McCreary
Jul 6 '12 at 17:36
...