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differentiate null=True, blank=True in django
...null=True because it allows two different kinds of "blanky" values. I just tested this behaviour with Django 1.8/MySQL 5.6
– Edward D'Souza
Aug 3 '16 at 17:14
...
string.charAt(x) or string[x]?
...rks on all major browsers, except for IE7 and below.
// Bracket Notation
"Test String1"[6]
// charAt Implementation
"Test String1".charAt(6)
It used to be a bad idea to use brackets, for these reasons (Source):
This notation does not work in IE7.
The first code snippet will return
undef...
What does an exclamation mark mean in the Swift language?
...t basically tells the compiler "I know this has a value, you don't need to test for it". If you didn't want to use it, you could conditionally test for it:
if let otherPerson = john {
otherPerson.apartment = number73
}
The interior of this will only evaluate if john has a value.
...
How to check for DLL dependency?
...ially done in C#, meet "Dependencies.exe": github.com/lucasg/Dependencies. Test impression: a bit beta-ish, but it handles API-sets and SxS apparently (missing from Dependency Walker).
– Stein Åsmul
Dec 14 '17 at 12:15
...
What is an IndexOutOfRangeException / ArgumentOutOfRangeException and how do I fix it?
...e about custom lower bound arrays:
void foo<T>(T[] array) { }
void test() {
// This will throw InvalidCastException, cannot convert Int32[] to Int32[*]
foo((int)Array.CreateInstance(typeof(int), new int[] { 1 }, new int[] { 1 }));
}
Validate Parameters
If index comes from a paramet...
How to detect if a script is being sourced
...
A line similar to this or an assignment like pathname="$_" (with a later test and action) must be on the first line of the script or on the line after the shebang (which, if used, should be for ksh in order for it to work under the most circumstances).
...
How dangerous is it to compare floating point values?
... interval!) can be assigned that's all graphics needs.
So if you want to test if your point is outside a [0..width[ range this is just fine. Just make sure you define inclusion consistently. For example always define inside is (x>=0 && x < width). The same goes for intersection or hi...
Is there a limit to the length of a GET request? [duplicate]
...sted By User Erickson, I Post My comment As Answer:
I have done some more testing with IE8, IE9, FF14, Opera11, Chrome20 and Tomcat 6.0.32 (fresh installation), Jersey 1.13 on the server side. I used the jQuery function $.getJson and JSONP. Results: All Browsers allowed up to around 5400 chars. FF ...
Is it not possible to stringify an Error using JSON.stringify?
...
configurable: true,
writable: true
});
var error = new Error('testing');
error.detail = 'foo bar';
console.log(JSON.stringify(error));
// {"message":"testing","detail":"foo bar"}
Using Object.defineProperty() adds toJSON without it being an enumerable property itself.
Regarding mo...
How to enumerate an enum with String type?
... @DmitryPetukhov I'd be happy to help, but: (1) are you sure you got the latest version of the code? (some crash was fixed a month ago) and (2) please give an MCVE of your custom type that can reproduce a crash, and your version of Xcode.
– Cœur
Jul 20 '18 at ...