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Understanding Fragment's setRetainInstance(boolean)
...ser leaves the activity?
Just like Activitys, Fragments may be destroyed by the system when memory resources are low. Whether you have your fragments retain their instance state across configuration changes will have no effect on whether or not the system will destroy the Fragments once you leave ...
Reversing a linked list in Java, recursively
...t spells it out, but you might find it easier to start from the bottom up, by asking and answering tiny questions (this is the approach in The Little Lisper):
What is the reverse of null (the empty list)? null.
What is the reverse of a one element list? the element.
What is the reverse of an n ele...
Why wasn't PyPy included in standard Python?
... when it comes to "implementation details" (behavior that is not specified by the language but is still important at a practical level).
CPython runs on more architectures than PyPy and has been successfully adapted to run in embedded architectures in ways that may be impractical for PyPy.
CPython's...
Find a string by searching all tables in SQL Server Management Studio 2008
... XML PATH('')) AS Sql
FROM @Result AS R
GROUP BY R.TableName) TB
ORDER BY TB.Sql
OPEN @tableCursor
FETCH NEXT FROM @tableCursor INTO @Sql, @TableName, @ColumnName
WHILE (@@FETCH_STATUS = 0)
BEGIN
PRINT @Sql
SELECT @TableName AS [Tab...
Creating a zero-filled pandas data frame
...s as an existing data frame, you can just multiply the existing data frame by zero:
df_zeros = df * 0
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How to sort my paws?
...right paw.
If this were always the case, we could simply sort the impacts by initial contact time and use a modulo 4 to group them by paw.
However, even when everything is "normal", this doesn't work. This is due to the trapezoid-like shape of the pattern. A hind paw spatially falls behind th...
Convert HTML to PDF in .NET
I want to generate a PDF by passing HTML contents to a function. I have made use of iTextSharp for this but it does not perform well when it encounters tables and the layout just gets messy.
...
Get the full URL in PHP
...a https link? What if HTTP_HOST is not available or has been tampered with by client side? This answer seems incomplete and unreliable.
– Manachi
Apr 5 '13 at 2:07
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How to vertically align into the center of the content of a div with defined width/height?
...an be seen in the demo. You can get it to work for every scenario manually by changing the height % of your content div and multiplying it by -.5 to get your margin-top value.
.area{
position:relative;
display:block;
height:100px;
width:100px;
border:1px solid black;
backg...
How to temporarily exit Vim and go back
... Vim.
To start a new shell
Start a subshell using:
:sh
(as configured by)
:set shell?
or
:!bash
followed by:
Ctrl+D (or exit, but why type so much?)
to kill the shell and return to Vim.
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