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Create Django model or update if exists
...ts.get_or_create(identifier=id)
if created:
# means you have created a new person
else:
# person just refers to the existing one
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Is this a “good enough” random algorithm; why isn't it used if it's faster?
...tatic void main(String[] args) throws Exception {
QuickRandom qr = new QuickRandom();
int[] frequencies = new int[10];
for (int i = 0; i < 100000; i++) {
frequencies[(int) (qr.random() * 10)]++;
}
printDistribution("QR", frequencies);
f...
Is there any way to enforce typing on NSArray, NSMutableArray, etc.?
... use the following syntax:
NSArray<MyClass *> *myArray = @[[MyClass new], [MyClass new]];
Note
It's important to note that these are compiler warnings only and you can technically still insert any object into your array. There are scripts available that turn all warnings into errors which...
How to Implement DOM Data Binding in JavaScript
...at this question as strictly educational. I'm still interested in hearing new answers and ideas to implement this
15 Answe...
How to center a Window in Java?
...
From this link
If you are using Java 1.4 or newer,
you can use the simple method
setLocationRelativeTo(null) on the
dialog box, frame, or window to center
it.
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How to replace case-insensitive literal substrings in Java
...other approaches but it's pretty solid and easy to follow, esp. for people newer to Java. One thing that gets me about the String class is this: It's been around for a very long time and while it supports a global replace with regexp and a global replace with Strings (via CharSequences), that last ...
How do I load a file into the python console?
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Python 3: new exec (execfile dropped) !
The execfile solution is valid only for Python 2. Python 3 dropped the execfile function - and promoted the exec statement to a builtin universal function. As the comment in Python 3.0's changel...
Find object by id in an array of JavaScript objects
... For me, best answer so far. Doesn't need jQuery neither creating new auxiliar arrays.
– Canta
Nov 13 '17 at 17:38
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doGet and doPost in Servlets
...tication and the time-sensitive nature of the page —search results, last news, etc— outside consideration). We can talk about a bookmarkable request. Clicking a link, clicking a bookmark, entering raw URL in browser address bar, etcetera will all fire a HTTP GET request. If a Servlet is listenin...
How do I change the data type for a column in MySQL?
... the table or fail on the execution if something is not complaint with the new column type?
– EndermanAPM
Jan 23 '17 at 2:02
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