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What is “String args[]”? parameter in main method Java
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In Java args contains the supplied command-line arguments as an array of String objects.
In other words, if you run your program as java MyProgram one two then args will contain ["one", "two"].
If you wanted to output the contents of args, you can just loop through them like this...
public clas...
Why does Java's hashCode() in String use 31 as a multiplier?
Per the Java documentation, the hash code for a String object is computed as:
13 Answers
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How do I iterate over an NSArray?
...illisMult;
NSLog(@"displayResult: %f milliseconds", millis);
NSString *str = [[NSString alloc] initWithFormat:@"%f milliseconds", millis];
[labelResults setText:str];
[str release];
}
// process using NSArray
-(IBAction) doNSArray:(id)sender {
NSLog(@"doNSArray: %@",...
How can I run a PHP script in the background after a form is submitted?
...y notification process that happens (or doesn't). (shell_exec returns as a string and this was easier than using exec, assigning the output to a variable and then opening a file to write to.)
I'm using the following line to invoke the email script:
shell_exec("/path/to/php /path/to/send_notificati...
Add text to Existing PDF using Python
...eate a new pdf containing your text to add using ReportLab, save this as a string object
read the string object using PdfFileReader(), we'll call this text
create a new PDF object using PdfFileWriter(), we'll call this output
iterate through input and apply .mergePage(*text*.getPage(0)) for each pag...
How to keep the console window open in Visual C++?
...ight be worth submitting a feature request to SCons to handle the required extra step.
– JBentley
Sep 18 '15 at 15:31
1
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Unable to execute dex: Multiple dex files define Lcom/myapp/R$array;
...ng 16!)
I added an external JAR to both those projects and pointed it to \extras\android\v4...
And also removed the v4 jar I had in their libs folders.
Clean all projects and re-build.
Voilla!
The exact error I was receiving: Unable to execute dex: Multiple dex files define Landroid/support/v4/v...
Django rest framework, use different serializers in the same ModelViewSet
...the approach that checks the HTTP method? It's clearer IMO and requires no extra checks.
def get_serializer_class(self):
if self.request.method == 'POST':
return NewRackItemSerializer
return RackItemSerializer
Credits/source: https://github.com/encode/django-rest-framework/issues/...
Why would you ever implement finalize()?
...rr to point out that you're cleaning up after a buggy caller.
It provides extra safety in an exceptional/buggy situation. Not every caller is going to do the correct try {} finally {} stuff every time. Unfortunate, but true in most environments.
I agree that it's rarely needed. And as commenter...
How to trim whitespace from a Bash variable?
...ming for you. It's one command/program, no parameters, returns the trimmed string, easy as that!
Note: this doesn't remove all internal spaces so "foo bar" stays the same; it does NOT become "foobar". However, multiple spaces will be condensed to single spaces, so "foo bar" will become "foo bar"...