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How can I list (ls) the 5 last modified files in a directory?
I know ls -t will list all files by modified time. But how can I limit these results to only the last n files?
5 Answe...
No appenders could be found for logger(log4j)?
...ting and select your resource folder and click resources, it will automatically add your every resource to the classpath.
– Waqas
Aug 12 '16 at 7:04
1
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django 1.5 - How to use variables inside static tag
I'm currently migrating all the static files references in my project to the new {% static %} tag that django 1.5 introduced, but I'm having a problem, in some places I use variables to get the content. With the new tag I can't, is there any way to solve this?
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Spring CrudRepository findByInventoryIds(List inventoryIdList) - equivalent to IN clause
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It's actually listed in the reference documentation.
– Oliver Drotbohm
Sep 27 '13 at 14:09
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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:...
A std::map that keep track of the order of insertion?
...::sort using appropriate functor.
Or you could use boost::multi_index. It allows to use several indexes.
In your case it could look like the following:
struct value_t {
string s;
int i;
};
struct string_tag {};
typedef multi_index_container<
value_t,
indexed_by<
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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 to compare two dates?
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@Emadpres: imagine this was typed manually. The past line was typed first, while the present line was typed second... so the past line was entered first, so past < present is True.
– ramcdougal
Mar 20 '17 at 15:50
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Swapping column values in MySQL
...test s1, swap_test s2 SET s1.x=s1.y, s1.y=s2.x WHERE s1.id=s2.id;
Essentially, the 1st table is the one getting updated and the 2nd one is used to pull the old data from.
Note that this approach requires a primary key to be present.
This is my test schema:
CREATE TABLE `swap_test` (
`id` int(1...
Cross-browser multi-line text overflow with ellipsis appended within a fixed width and height
...cess remains invisible and even with JS turned off the result remains 'visually correct' (without the "..." of course).
If you combine this with a sensible truncation on the server-side (that leaves only a small overhead) then it will run quicker :).
Again, this is not a complete solution, just an...