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Python using enumerate inside list comprehension
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Just to be really clear, this has nothing to do with enumerate and everything to do with list comprehension syntax.
This list comprehension returns a list of tuples:
[(i,j) for i in range(3) for j in 'abc']
this a list of dicts:
[{i:...
PostgreSQL wildcard LIKE for any of a list of words
... According to dba.stackexchange.com/a/10696/27757 SIMILAR TO is internally translated to a regex search
– Mark K Cowan
Sep 16 '16 at 10:17
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Multiline syntax for piping a heredoc; is this portable?
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Yes, the POSIX standard allows this. According to the 2008 version:
The here-document shall be treated as a single word that begins after
the next <newline> and continues until there is a line containing only
the delimiter and a <n...
Set Viewbag before Redirect
Is it possible to set the ViewBag before I call a redirection?
5 Answers
5
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How to count occurrences of a column value efficiently in SQL?
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If you're using Oracle, then a feature called analytics will do the trick. It looks like this:
select id, age, count(*) over (partition by age) from students;
If you aren't using Oracle, then you'll need to join back to the counts:
select a.id, a.age, b.age_co...
How can I find all of the distinct file extensions in a folder hierarchy?
...inux machine I would like to traverse a folder hierarchy and get a list of all of the distinct file extensions within it.
1...
Static table view outside UITableViewController
...ntainer view to your ViewController and size it about the size you want (smaller than the view) -> when you drag the container view it will create a segue and another view. Remove that segue and view.
Then finally ctrl click in your container and drag to your new TableViewContoller. Select Embed....
What is the session's “secret” option?
...o compute the hash. Without the string, access to the session would essentially be "denied". Take a look at the connect docs, that should help a little bit.
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Chain-calling parent initialisers in python [duplicate]
... B inheriting from A, class C inheriting from B. What is a generic way to call a parent class initialiser in an initialiser? If this still sounds too vague, here's some code.
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C++ where to initialize static const
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Anywhere in one compilation unit (usually a .cpp file) would do:
foo.h
class foo {
static const string s; // Can never be initialized here.
static const char* cs; // Same with C strings.
static const int i = 3; // Integral types can be initialized...