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Do I need to manually close an ifstream?
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23
Using a nested scope just to close the file is completely artificial - if you mean to close it, call close() on it.
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Return 0 if field is null in MySQL
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332
Use IFNULL:
IFNULL(expr1, 0)
From the documentation:
If expr1 is not NULL, IFNULL() ret...
SQL query for finding records where count > 1
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350
Use the HAVING clause and GROUP By the fields that make the row unique
The below will find
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What does the “-U” option stand for in pip install -U
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edited May 13 '18 at 10:40
answered Sep 15 '12 at 6:50
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Fatal error: Class 'SoapClient' not found
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358
Diagnose
Look up the following inside your script file
phpinfo();
If you can't find Soap C...
An “and” operator for an “if” statement in Bash
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William PursellWilliam Pursell
162k4343 gold badges235235 silver badges267267 bronze badges
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How do you remove the root CA certificate that fiddler installs
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Martijn Pieters♦
839k212212 gold badges32203220 silver badges28102810 bronze badges
answered Dec 13 '16 at 8:33
Eyal Ab...
Android WebView, how to handle redirects in app instead of opening a browser
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edited Nov 1 '10 at 3:52
answered Nov 1 '10 at 3:34
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How to convert a ruby hash object to JSON?
...though).
So, take a look here:
car = {:make => "bmw", :year => "2003"}
# => {:make=>"bmw", :year=>"2003"}
car.to_json
# NoMethodError: undefined method `to_json' for {:make=>"bmw", :year=>"2003"}:Hash
# from (irb):11
# from /usr/bin/irb:12:in `<main>'
require 'json'
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How to emulate C array initialization “int arr[] = { e1, e2, e3, … }” behaviour with std::array?
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63
Best I can think of is:
template<class T, class... Tail>
auto make_array(T head, Tail... ...