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What is the optimal length for an email address in a database?
...
The maximum length of an email address is 254 characters.
Every email address is composed of two parts. The local part that comes before the '@' sign, and the domain part that follows it. In "user@example.com", the local part is "user", and the domain part is "examp...
Is Redis just a cache?
..., when you want to render your homepage, you ask Redis for the most recent 25 questions.
$ lrange questions 0 24
1) "question:100"
2) "question:99"
3) "question:98"
4) "question:97"
5) "question:96"
...
25) "question:76"
Now that you have the ids, retrieve items from Redis using pipelining and ...
How to determine the first and last iteration in a foreach loop?
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edited Jan 10 '17 at 2:25
billynoah
15.5k88 gold badges6060 silver badges8282 bronze badges
answered ...
How to Reverse Fragment Animations on BackStack?
...p/…, int, int, int)
– mDroidd
Dec 25 '13 at 10:33
Hi im actually using Content transition, is working fine, but when...
Can Selenium interact with an existing browser session?
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answered Dec 21 '15 at 11:25
Manoj SahuManoj Sahu
2,0161616 silver badges1717 bronze badges
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Copying a HashMap in Java
... ratchet freakratchet freak
43.8k55 gold badges5252 silver badges9999 bronze badges
4
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Pointer vs. Reference
... a nutshell.
– Nils Pipenbrinck
Nov 25 '08 at 20:35
2
Martin, You can only do this with pointers ...
Can't use Swift classes inside Objective-C
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25 Answers
25
Active
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Oracle: If Table Exists
...ay to do that?
– Wilson Freitas
Apr 25 '12 at 19:02
8
If I add many EXECUTE IMMEDIATE 'DROP TABLE...
How do I get the row count of a pandas DataFrame?
...ataFrame(np.arange(n * 3).reshape(n, 3)),
n_range=[2**k for k in range(25)],
kernels=[
lambda data: data.shape[0],
lambda data: data[0].count(),
lambda data: len(data.index),
],
labels=["data.shape[0]", "data[0].count()", "len(data.index)"],
xlabel="data r...