大约有 40,000 项符合查询结果（耗时：0.0431秒） [XML]
Counting the number of elements with the values of x in a vector
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You can just use table():
> a <- table(numbers)
> a
numbers
4 5 23 34 43 54 56 65 67 324 435 453 456 567 657
2 1 2 2 1 1 2 1 2 1 3 1 1 1 1
Then you can subset it:
> a[names(a)==435]
4...
Is “else if” a single keyword?
... a single keyword if we go to the draft C++ standard section 2.12 Keywords table 4 lists both if and else separately and there is no else if keyword. We can find a more accessible list of C++ keywords by going to cppreferences section on keywords.
The grammar in section 6.4 also makes this clear:
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float:left; vs display:inline; vs display:inline-block; vs display:table-cell;
...(the best is simply to not have any spaces between the elements)
display:table-cell;
Another one where you'll have problems with browser compatibility. Older IEs won't work with this at all. But even for other browsers, it's worth noting that table-cell is designed to be used in a context of being...
C default arguments
...1 creative! It has its limitations but also brings named parameters to the table. Note that, {} (empty initializer) is an error C99.
– u0b34a0f6ae
Oct 29 '11 at 3:45
29
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Hide all but $(this) via :not in jQuery selector
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$("table.tr").not(this).hide();
As an aside, I think you mean $("table tr") (with a space instead of a dot).
The way you have it, it selects every table which has a class of tr (eg, <table class="tr">), which is probab...
jQuery .on function for future elements, as .live is deprecated [duplicate]
...tor for a static parent of the element. For example, if you have a static table element and tr elements are added dynamically to the DOM, you could do something like $('table#id').on('click', 'tr', ...)
http://api.jquery.com/live/
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Text-align class for inside a table
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This does not work for table cells unfortunately. It may simply be a CSS order issue. See this issue [github.com/twitter/bootstrap/issues/6837]. Should be fixed in version 3.0.
– David
Apr 5 '13 at 17:05
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Find the PID of a process that uses a port on Windows
...bject ProcessName, State, Protocol, AddressLocal, AddressForeign | Format-Table
Output:
ProcessName State Protocol AddressLocal AddressForeign
----------- ----- -------- ------------ --------------
System LISTENING TCP [::]:8080 [::]:0
System LISTENING TCP 0.0.0.0:...
SQL Server : Columns to Rows
...nto rows:
select id, entityId,
indicatorname,
indicatorvalue
from yourtable
unpivot
(
indicatorvalue
for indicatorname in (Indicator1, Indicator2, Indicator3)
) unpiv;
Note, the datatypes of the columns you are unpivoting must be the same so you might have to convert the datatypes prior t...
How do I escape a reserved word in Oracle?
In TSQL I could use something like Select [table] from tablename to select a column named "table".
5 Answers
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