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How to sleep for five seconds in a batch file/cmd [duplicate]
...allows users to select one item from a list
of choices and returns the index of the selected choice.
Parameter List:
/C choices Specifies the list of choices to be created.
Default list is "YN".
/N Hides the list of choices in the prompt.
...
Truncate a list to a given number of elements
...m value of the desired size and the current size of the list as the ending index.
Lastly, note that the second argument should be one more than the last desired index.
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Fetch frame count with ffmpeg
...rent time while you go.
Alternatively, you can try AVFormatContext->nb_index_entries or the detected duration, which should work on fine at least undamaged AVI/MOV, or the library FFMS2, which is probably too slow to bother with for a progress bar.
...
Rolling or sliding window iterator?
...near the beginning are faster, or items near the end if you use a negative index.) I put a sum(w) in the body of my loop; this plays to the deque's strength (iterating from one item to the next is fast, so this loop ran a a full 20% faster than the next fastest method, pillmuncher's). When I change...
How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
...st, then table B).
Another reason for deadlock in database can be missing indexes. When a row is inserted/update/delete, the database needs to check the relational constraints, that is, make sure the relations are consistent. To do so, the database needs to check the foreign keys in the related tab...
What is “function*” in JavaScript?
...rogrammatically so that they can be passed around and elements accessed by index without having to compute the entire sequence (possibly infinite in size) beforehand.
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Role/Purpose of ContextLoaderListener in Spring?
...t;/display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
...
What is the reason not to use select *?
...you might defeat the optimizer's ability to pull the data right out of the index (for queries on columns that are all part of an index.) rather than doing
a lookup in the table itself
When TO use select *
When you explicitly NEED every column in the table, as opposed to needing every column in t...
How to split a long regular expression into multiple lines in JavaScript?
...ons) => (
new RegExp(interpolations.reduce(
(regex, insert, index) => (regex + insert + clean(raw[index + 1])),
clean(raw[0])
))
);
Using this you can now write regexes like this:
let re = regex`I'm a special regex{3} //with a comment!`;
Outputs
/I'm a special reg...
How to get the top 10 values in postgresql?
...esc
limit 10
If performance is important (when is it not ;-) look for an index on score.
Starting with version 8.4, you can also use the standard (SQL:2008) fetch first
select *
from scores
order by score desc
fetch first 10 rows only
As @Raphvanns pointed out, this will give you the first...