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Value Change Listener to JTextField
...cumentListener can, sometime, receive two events. For instance if the user selects the whole field content, then press a key, you'll receive a removeUpdate (all the content is remove) and an insertUpdate.
In your case, I don't think it is a problem but, generally speaking, it is.
Unfortunately, it s...
Elegant solution to duplicate, const and non-const, getters? [duplicate]
...use the data is exposed to the world. Using friend only exposes data to a select few, so gives better encapsulation.
Of course, this is not always possible so you may be stuck with the getters. At the very least, most or all of the "non-trivial chunk of code" should be in one or more private func...
How to install packages offline?
...r you don't need to use sudo pip….
2) use virtualenv
on online machine select a directory with terminal cd and run this code:
python -m virtualenv myenv
cd myenv
source bin/activate
pip install Flask
after installing all the packages, you have to generate a requirements.txt so while your virt...
Java's Interface and Haskell's type class: differences and similarities?
... class to other classes, define static methods and constructors that would select an implementation based on what return type is required in calling context, define methods that take arguments of the same type as the class implementing the interface, and various other things that don't really transl...
How to git bundle a complete repo
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@Philip Oakley: The git-rev-list-args is how you select refs that are shown by git show-ref command.
– Jakub Narębski
Aug 4 '12 at 17:21
2
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How to vertically center content with variable height within a div?
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Using the child selector, I've taken Fadi's incredible answer above and boiled it down to just one CSS rule that I can apply. Now all I have to do is add the contentCentered class name to elements I want to center:
.contentCentered {
...
How to add calendar events in Android?
... I like this solution a lot. Mainly because it pushes the user to select his/her own calendar (if he has more than one).
– Sebastian Roth
Dec 3 '10 at 7:38
2
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Relational Database Design Patterns? [closed]
... codepages.
Give every column a unique name. This make it easer on join to select the column. It is very difficult if every table has a column "ID" or "Name" or "Description". Use XyzID and AbcID.
Use a resource bundle or equals for complex SQL expressions. It make it easer to switch to another DBMS...
How to list of all the tables defined for the database when using active record?
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Don't know about active record, but here's a simple query:
select table_name
from INFORMATION_SCHEMA.Tables
where TABLE_TYPE = 'BASE TABLE'
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Program only crashes as release build — how to debug?
...sh do an Attach To Process (Tools menu on Visual Studio).
After the crash, select the option to launch debugger.
When asked to point to PDB files, browse to find them. If the PDB's were put in the same output folder as your E