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Clear variable in python
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@Bnicholas However it's not like null in PHP, in that setting a variable to null in PHP gives you similar behaviour in most cases as if you hadn't defined it in the first place. A value of None in Python is quite different from an undefined variable. None is quite like most othe...
How to get the insert ID in JDBC?
... Statement.RETURN_GENERATED_KEYS);
) {
statement.setString(1, user.getName());
statement.setString(2, user.getPassword());
statement.setString(3, user.getEmail());
// ...
int affectedRows = statement.executeUpdate();
if (affectedRow...
Unicode character as bullet for list-item in CSS
...tyle type="text/css">
ul {list-style:none;} /* you should use a css reset too... ;) */
ul li {background:url(images/icon_star.gif) no-repeat 0 5px;}
</style>
<ul>
<li>List Item 1</li>
<li>List Item 2</li>
<li>List Item 3</li>
</ul>
...
Assigning default values to shell variables with a single command in bash
...ts on variables in a bash (3.00) shell script where if the variable is not set, then it assigns a default, e.g.:
9 Answers
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'Must Override a Superclass Method' Errors after importing a project into Eclipse
...s overriding a superclass method).
Go to your project/IDE preferences and set the Java compiler level to 1.6 and also make sure you select JRE 1.6 to execute your program from Eclipse.
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impr...
Adding Python Path on Windows 7
...s 7, yet no matter the method I try, nothing seems to work. I've used the set command, I've tried adding it through the Edit Environment variables prompt etc.
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Implicit “Submit” after hitting Done on the keyboard at the last EditText
... EditText edit_txt = (EditText) findViewById(R.id.search_edit);
edit_txt.setOnEditorActionListener(new EditText.OnEditorActionListener() {
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
...
How do I select the “last child” with a specific class name in CSS? [duplicate]
...t class like its siblings but also has the last class which you can use to set any CSS property you want, like so:
ul li.list {
color: #FF0000;
}
ul li.list.last {
background-color: #000;
}
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Prevent multiple instances of a given app in .NET?
...soft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase class and set the IsSingleInstance property to true. (I believe a caveat here is that this won't work with WPF applications, will it?)
Use a named mutex and check if it's already been created.
Get a list of running processes and compar...
Create unique constraint with null columns
... editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
...