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Test if object implements interface
... operator does the work in a NullPointerException safe way. For example:
if ("" instanceof java.io.Serializable) {
// it's true
}
yields true. Since:
if (null instanceof AnyType) {
// never reached
}
yields false, the instanceof operator is null safe (the code you posted isn't). ...
Retrieve list of tasks in a queue in Celery
...
When specifying the worker I had to use a list as argument: inspect(['celery@Flatty']). Huge speed improvement over inspect().
– Adversus
Dec 14 '15 at 12:46
...
Fixing JavaScript Array functions in Internet Explorer (indexOf, forEach, etc.) [closed]
... to put this in writing. The wiki as a whole is CC Attribution-ShareAlike, if that's an acceptable licence (though CC isn't designed for code as such).
js-methods looks OK in general, but is not as standards-compliant around the edges of how the functions are supposed to be (eg. undefined list item...
Replace input type=file by an image
...case the upload file buttons are just for uploading images ( jpeg|jpg|png|gif ), so I was wondering if I could use a " clickable " image which would act exactly as an input type file (show the dialog box, and same $_FILE on submitted page).
I found some workaround here , and this interesting one...
Separating class code into a header and cpp file
...s declaration goes into the header file. It is important that you add the #ifndef include guards, or if you are on a MS platform you also can use #pragma once. Also I have omitted the private, by default C++ class members are private.
// A2DD.h
#ifndef A2DD_H
#define A2DD_H
class A2DD
{
int gx;
...
NSDictionary - Need to check whether dictionary contains key-value pair or not
...
Just ask it for the objectForKey:@"b". If it returns nil, no object is set at that key.
if ([xyz objectForKey:@"b"]) {
NSLog(@"There's an object set for key @\"b\"!");
} else {
NSLog(@"No object set for key @\"b\"");
}
Edit: As to your edited second que...
Downloading a file from spring controllers
...his output stream as a place to put generated PDF to your generator. Also, if you know what file type you are sending, you can set
response.setContentType("application/pdf");
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How to avoid Dependency Injection constructor madness?
...
You are right that if you use the container as a Service Locator, it's more or less a glorified static factory. For lots of reasons I consider this an anti-pattern.
One of the wonderful benefits of Constructor Injection is that it makes violat...
Using curl POST with variables defined in bash script functions
...:xxxxx@xxxx-www.xxxxx.com/xxxxx/xxxx/xxxx"
This said, here are a few clarifications about shell quoting rules:
The double quotes in the -H arguments (as in -H "foo bar") tell bash to keep what's inside as a single argument (even if it contains spaces).
The single quotes in the --data argument (a...
Read/Write String from/to a File in Android
... InputStream inputStream = context.openFileInput("config.txt");
if ( inputStream != null ) {
InputStreamReader inputStreamReader = new InputStreamReader(inputStream);
BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
String receiveS...