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Why is it Valid to Concatenate Null Strings but not to Call “null.ToString()”?
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The first sample will be translated into:
var bob = String.Concat("abc123", null, null, null, "abs123");
The Concat method checks input and translate null as an empty string
The second sample will be translated into:
var wtf = ((object)null).ToString();
So a null reference exception will ...
getting date format m-d-Y H:i:s.u from milliseconds
...es not work on all locales correctly. Some countries like Germany write "0,1234" or "0.1234" instead of ".1234", therefore your code gives following output for me: 2012-07-08 11:14:15.0.889342
– Daniel Marschall
Apr 18 at 13:14
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Splitting on first occurrence
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>>> s = "123mango abcd mango kiwi peach"
>>> s.split("mango", 1)
['123', ' abcd mango kiwi peach']
>>> s.split("mango", 1)[1]
' abcd mango kiwi peach'
...
Check whether a string matches a regex in JS
...{5,})$/.test('abc12')); // true
console.log(/^([a-z0-9]{5,})$/.test('abc123')); // true
...and you could remove the () from your regexp since you've no need for a capture.
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How to revert a Git Submodule pointer to the commit stored in the containing repository?
...d1d6434b8b29ae775ad8c2e48c5391 main
160000 commit 7c5889497938cd5699a9234a98ee93947e52b1ed sm1
160000 commit f68bed61cba6f94cef57554f2cf46a45a4a0d337 sm2
$ cd sm2
$ git log --oneline --decorate
5b8d48f (HEAD, foo1) foo1.1
f68bed6 (origin/master, origin/HEAD, master) Initial commit.
$ git checko...
How do I verify jQuery AJAX events with Jasmine?
...est to the correct URL", function() {
spyOn($, "ajax");
getProduct(123);
expect($.ajax.mostRecentCall.args[0]["url"]).toEqual("/products/123");
});
function getProduct(id) {
$.ajax({
type: "GET",
url: "/products/" + id,
contentType: "application/json; charset...
TypeError: got multiple values for argument
...ut it took me ages to realise that.
I had
self.myFunction(self, a, b, c='123')
but it should have been
self.myFunction(a, b, c='123')
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What is Normalisation (or Normalization)?
...ase that usually contains family members
id, name, address
214 Mr. Chris 123 Main St.
317 Mrs. Chris 123 Main St.
could be normalized as
id name familyID
214 Mr. Chris 27
317 Mrs. Chris 27
and a family table
ID, address
27 123 Main St.
Near-Complete normalization (BCNF) is usually not used...
git --git-dir not working as expected
...Heba Waly (HebaWaly).
(Merged by Junio C Hamano -- gitster -- in commit 17e4a1b, 12 Feb 2020)
git: update documentation for --git-dir
Signed-off-by: Heba Waly
Helped-by: Junio C Hamano
git --git-dir <path> is a bit confusing and sometimes doesn't work as the user would expect...
Python's “in” set operator
...s, you need to use set operations like issubset():
>>> k
{'ip': '123.123.123.123', 'pw': 'test1234', 'port': 1234, 'debug': True}
>>> set('ip,port,pw'.split(',')).issubset(set(k.keys()))
True
>>> set('ip,port,pw'.split(',')) in set(k.keys())
False
...