大约有 42,000 项符合查询结果（耗时：0.0342秒） [XML]
android fragment- How to save states of views in a fragment when another fragment is pushed on top o
In android, a fragment (say FragA ) gets added to the backstack and another fragment (say FragB ) comes to the top. Now on hitting back FragA comes to the top and the onCreateView() is called. Now I had FragA in a particular state before FragB got pushed on top of it.
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Binary Data in MySQL [closed]
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For a table like this:
CREATE TABLE binary_data (
id INT(4) NOT NULL AUTO_INCREMENT PRIMARY KEY,
description CHAR(50),
bin_data LONGBLOB,
filename CHAR(50),
filesize CHAR(50),
filetype CHAR(50)
);
Here is a PHP example:
<?php
// store.php3 - by ...
Database, Table and Column Naming Conventions? [closed]
...hink the main issue here is that the Singular table name crowd seem to consider the table as the entity, rather than the row in the table which the Plural crowd does. You have to ask your self which it is. If the table is just a container of rows, isn't it more logical to use plural naming? You woul...
Order a MySQL table by two columns
...mn then the second but not both at the same time.
– aidonsnous
Apr 27 '17 at 13:14
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pandas GroupBy columns with NaN (missing) values
...lna(-1).groupby('b').sum()
Out[12]:
a
b
-1 2
4 1
6 3
That said, this feels pretty awful hack... perhaps there should be an option to include NaN in groupby (see this github issue - which uses the same placeholder hack).
However, as described in another answer, from pandas 1.1 you have...
I have an error: setOnItemClickListener cannot be used with a spinner, what is wrong?
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developer.android.com/guide/topics/ui/controls/…
– shkschneider
May 12 '15 at 13:32
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Will the base class constructor be automatically called?
...s not. So in order to create a parametersless constructor, you need to provide an argument to the base constuctor, which you can do with the base implementation.
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django order_by query set, ascending and descending
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Reserved.objects.filter(client=client_id).order_by('-check_in')
Notice the - before check_in.
Django Documentation
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How can I display just a portion of an image in HTML/CSS?
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Just to clarify, you’d set the width and height of the container td, div, span or whatever to 50px to make this work.
– Paul D. Waite
Apr 27 '09 at 8:38
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Click button copy to clipboard using jQuery
How do I copy the text inside a div to the clipboard? I have a div and need to add a link which will add the text to the clipboard. Is there a solution for this?
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