checked

int y = -2147483648; int z = unchecked(y / -1); The second line causes an OverflowException . Shouldn't unchecked prevent this? For example: int y = -2147483648; int z = unchecked(y * 2); doesn't cause an exception. This is not an exception that the C# compiler or the jitter have any control over. It is specific to Intel/AMD processors, the CPU generates a #DE trap (Divide Error) when the IDIV instruction fails. The operating system handles the processor trap and reflects it back into the process with a STATUS_INTEGER_OVERFLOW exception. The CLR dutifully translates it to a matching managed

I would like to make a structure with the condition (if-else) RadioButton I want that when the Radiobutton RB1 is selected, this function is active: regAuxiliar = ultimoRegistro; And when the radiobutton RB2 is selected, this function is active: regAuxiliar = objRegistro; And sorry for my English, I'm Brazilian. Just as you would with a CheckBox RadioButton rb; rb = (RadioButton) findViewById(R.id.rb); rb.isChecked(); if(jRadioButton1.isSelected()){ jTextField1.setText("Welcome"); } else if(jRadioButton2.isSelected()){ jTextField1.setText("Hello"); } You can also maintain a flag value based on

I've been reading about unchecked versus checked questions, none of the online resources have been truly clear about the difference and when to use both. From what I understand, both of them get thrown at runtime, both of them represent program states that are outside the expected bounds of the logic, but checked exceptions must be explicitly caught while unchecked ones do not. My question is, suppose for argument's sake I have a method that divides two numbers double divide(double numerator, double denominator) { return numerator / denominator; } and a method that requires divison somewhere

When I check a checkbox, I want it to turn <p> #0099ff . When I uncheck the checkbox, I want it to undo that. Code I have so far: $('#checkbox').click(function(){ if ($('#checkbox').attr('checked')) { /* NOT SURE WHAT TO DO HERE */ } }) jensgram I would use .change() and this.checked : $('#checkbox').change(function(){ var c = this.checked ? '#f00' : '#09f'; $('p').css('color', c); }); -- On using this.checked Andy E has done a great write-up on how we tend to overuse jQuery: Utilizing the awesome power of jQuery to access properties of an element . The article specifically treats the use of

I noticed that PHP seems to return only values of checked checkboxes. I would like to see a list of checkboxes, not just values of checked checkboxes. Is there a way to detect variables of unchecked boxes? I asked because I want to be able to update settings. For example, I have a few options that are already checked but if an user decides to uncheck an option, I need to know that unchecked value so I can update the option to be disabled. I just ran into this problem myself. I solved it by adding a duplicate hidden field with the same name. When the browser sends this information, the second

I'd like to know what differs those states. I didn't find any webpage clarifying this. Martin Harvey The difference between Checked and Activated is actually quite interesting. Even the Google documentation is apologetic (emphasis below added): ... For example, in a list view with single or multiple selection enabled, the views in the current selection set are activated. (Um, yeah, we are deeply sorry about the terminology here.) The activated state is propagated down to children of the view it is set on. So here is the difference: Activated was introduced in Honeycomb so you can't use it

How do I check in PHP whether a checkbox is checked or not? Tomas Markauskas If the checkbox is checked, then the checkbox's value will be passed. Otherwise, the field is not passed in the HTTP post. if (isset($_POST['mycheckbox'])) { echo "checked!"; } you can check that by either isset() or empty() (its check explicit isset) weather check box is checked or not for example <input type='checkbox' name='Mary' value='2' id='checkbox' /> here you can check by if (isset($_POST['Mary'])) { echo "checked!"; } or if (!empty($_POST['Mary'])) { echo "checked!"; } the above will check only one if you