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How to combine two strings together in PHP?
...inside a string :
$arr1 = ['val' => 'This is a'];
$arr2 = ['val' => 'test'];
$variable = "{$arr1['val']} {$arr2['val']}";
Use sprintf() or printf()
sprintf() allows us to format strings using powerful formatting options. It is overkill for such simple concatenation but it handy when you have ...
Explaining Python's '__enter__' and '__exit__'
...El\Desktop\myfile.txt") as logfile:
print("Main")
logfile.logging("Test1")
logfile.logging("Test2")
I hope now you have basic understanding of both __enter__ and __exit__ magic methods.
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What do
...ough not particularly well documented.
They are meant to provide a way to test the relationship between the classes, just like <: and <% do, in situations when the latter cannot be used.
As for the question "when should I use them?", the answer is you shouldn't, unless you know you should. :...
Removing duplicates from a list of lists
....groupby(k))
[[1, 2], [3], [4], [5, 6, 2]]
itertools often offers the fastest and most powerful solutions to this kind of problems, and is well worth getting intimately familiar with!-)
Edit: as I mention in a comment, normal optimization efforts are focused on large inputs (the big-O approach) b...
Why does overflow:hidden not work in a ?
...th. However, it doesn't work with large strings of unspaced text. Here's a test case:
11 Answers
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Asking the user for input until they give a valid response
...str.isupper to get only uppercase. See docs for the full list.
Membership testing:
There are several different ways to perform it. One of them is by using __contains__ method:
from itertools import chain, repeat
fruits = {'apple', 'orange', 'peach'}
prompts = chain(["Enter a fruit: "], repeat("I d...
How to find all serial devices (ttyS, ttyUSB, ..) on Linux without opening them?
...udev finds out about the "built-in" ttyS* serial ports, they'll have to be tested with ioctl or similar as in the other answers.
– Reed Hedges
Mar 3 '16 at 20:38
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Python's most efficient way to choose longest string in list?
I have a list of variable length and am trying to find a way to test if the list item currently being evaluated is the longest string contained in the list. And I am using Python 2.6.1
...
Reading a key from the Web.Config using ConfigurationManager
...the value isn't in the app config. Better to trap the object returned and test for null before resolving. Try running it when "mysettings" isn't in the config and you'll see the exception pop. Instead something like whats below might be safer... string key = "mysettings"; ...
Setting PayPal return URL and making it auto return?
...i-bin/?cmd=_render-content&content_ID=developer/e_howto_html_Appx_websitestandard_htmlvariables
hope this helps you..:)
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