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delete vs delete[] operators in C++
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I made this error when I had an array of C strings like "char** strArray". If you have an array like I do, you need to iterate through the array and delete/free each element, then delete/free the strArray itself. Using "delete[]" on the array I have does not work sinc...
ViewPager with previous and next page boundaries
...ragmentActivity {
ViewPager pager;
MyPageAdapter obj_adapter;
String str_device;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
init();
}
private void i...
Exception thrown in catch and finally clause
...quite the code snippet to:
public class C1 {
public static void main(String [] argv) throws Exception {
try {
System.out.print(1);
q();
}
catch ( Exception i ) {
// <-- currentException = Exception, as thrown by q()'s finally bloc...
How do I remove a file from the FileList
...re file list by setting the value property of the input object to an empty string, like:
document.getElementById('multifile').value = "";
BTW, the article Using files from web applications might also be of interest.
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Undefined reference to static class member
...y simple inline method definition. The approach proved a bit wobbly with C-string constexprs inside template classes, though.
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How do I tell Spring Boot which main class to use for the executable jar?
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Since Spring Boot 1.5, you can complete ignore the error-prone string literal in pom or build.gradle. The repackaging tool (via maven or gradle plugin) will pick the one annotated with @SpringBootApplication for you. (Refer to this issue for detail: https://github.com/spring-projects/spr...
How to add 30 minutes to a JavaScript Date object?
...unction() { if(ret.getDate() != date.getDate()) ret.setDate(0);};
switch(String(interval).toLowerCase()) {
case 'year' : ret.setFullYear(ret.getFullYear() + units); checkRollover(); break;
case 'quarter': ret.setMonth(ret.getMonth() + 3*units); checkRollover(); break;
case 'month...
How can I pop-up a print dialog box using Javascript?
...message box in asp net core for instance:
await JSRuntime.InvokeAsync<string>("alert", "Hello user, this is the message box");
To have a confirm message box:
bool question = await JSRuntime.InvokeAsync<bool>("confirm", "Are you sure you want to do this?");
if(question == true)
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How to have Android Service communicate with Activity
...FRESH_DATA_INTENT));
(RefreshTask.REFRESH_DATA_INTENT is just a constant string.)
In my listening activity, I define my BroadcastReceiver:
private class DataUpdateReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.g...
Difficulty with ng-model, ng-repeat, and inputs
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The advice is don't bind to primitives.
Your ngRepeat is iterating over strings inside a collection, when it should be iterating over objects. To fix your problem
<body ng-init="models = [{name:'Sam'},{name:'Harry'},{name:'Sally'}]">
<h1>Fun with Fields and ngModel</h1>
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