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How does PHP 'foreach' actually work?
...on iterate($arr) {
foreach ($arr as $v) {}
}
$outerArr = [0, 1, 2, 3, 4];
iterate($outerArr);
Here, $arr will be duplicated to prevent IAP changes on $arr from leaking to $outerArr. In terms of the conditions above, the array is not a reference (is_ref=0) and is used in two places (refcount=2...
How can I append a string to an existing field in MySQL?
... Daniel VassalloDaniel Vassallo
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62
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git cherry-pick says “…38c74d is a merge but no -m option was given”
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640
The way a cherry-pick works is by taking the diff a changeset represents (the difference betwee...
Why use @Scripts.Render(“~/bundles/jquery”)
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edited Sep 7 '18 at 14:47
answered Aug 30 '12 at 8:22
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How do RVM and rbenv actually work?
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241
Short explanation: rbenv works by hooking into your environment's PATH. The concept is simple, ...
How to do a safe join pathname in ruby?
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answered Feb 28 '09 at 4:33
csextoncsexton
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How to use mysql JOIN without ON condition?
...th three rows ('a', 'b', and 'c') and a table with four rows (say 1, 2, 3, 4) would have 12 rows.
In practice, if you want to do a cross join, then use cross join:
from A cross join B
is much better than:
from A, B
and:
from A join B -- with no on clause
The on clause is required for a rig...
Using Position Relative/Absolute within a TD?
...position: relative has the desired effect on Chrome 13, but not on Firefox 4. Your solution here is to add a div around your content and put the position: relative on that div instead of the td. The following illustrates the results you get with the position: relative (1) on a div good), (2) on a t...
What is the correct way of using C++11's range-based for?
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4 Answers
4
Active
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Requests — how to tell if you're getting a 404
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Look at the r.status_code attribute:
if r.status_code == 404:
# A 404 was issued.
Demo:
>>> import requests
>>> r = requests.get('http://httpbin.org/status/404')
>>> r.status_code
404
If you want requests to raise an exception for error codes (4x...