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Insert into … values ( SELECT … FROM … )
I am trying to INSERT INTO a table using the input from another table. Although this is entirely feasible for many database engines, I always seem to struggle to remember the correct syntax for the SQL engine of the day ( MySQL , Oracle , SQL Server , Informix , and DB2 ).
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list_display - boolean icons for methods
When defining the list_display array for a ModelAdmin class, if a BooleanField or NullBooleanField is given the UI will use nice looking icons instead of True/False text in the column. If a method that returns a boolean is given, however, it simply prints out True/False.
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Formatting Decimal places in R
...umber, for example 1.128347132904321674821 that I would like to show as only two decimal places when output to screen (or written to a file). How does one do that?
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Detect browser or tab closing
Is there any cross-browser JavaScript/jQuery code to detect if the browser or a browser tab is being closed, but not due to a link being clicked?
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How to escape text for regular expression in Java
Does Java have a built-in way to escape arbitrary text so that it can be included in a regular expression? For example, if my users enter "$5", I'd like to match that exactly rather than a "5" after the end of input.
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How to upgrade all Python packages with pip?
Is it possible to upgrade all Python packages at one time with pip ?
55 Answers
55
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A TwoWay or OneWayToSource binding cannot work on the read-only property
I've a read only property I need to display in a textbox, and getting this error at runtime. I've set IsEnabled="False" , IsReadOnly="True" - no luck.
Other searches say the readonly should fix it, but not for me.
I've got an ugly workaround by adding a dummy setter...
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Android: How to change CheckBox size?
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You just need to set the related drawables and set them in the checkbox:
<CheckBox
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="new checkbox"
android:background...
How can I mix LaTeX in with Markdown? [closed]
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Have you tried with Pandoc?
EDIT:
Although the documentation has become a bit complex, pandoc has supported inline LaTeX and LaTeX templates for 10 years.
Documents like the following one can be written in Markdown:
---
title: Ju...
Javascript Reduce an empty array
When I reduce the array, I am trying to get the number zero, but I dont clearly understand the behaviour of the function
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