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How to calculate the intersection of two sets? [duplicate]
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Use the retainAll() method of Set:
Set<String> s1;
Set<String> s2;
s1.retainAll(s2); // s1 now contains only elements in both sets
If you want to preserve the sets, create a new set to hold the intersection:
Set<String&g...
How do I write a Python dictionary to a csv file? [duplicate]
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Small addition: You can easily print a subset of a dict by using csv.DictWriter(f, ["testing"], extrasaction='ignore')
– Dawodo
Sep 19 '16 at 16:55
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How to upgrade R in ubuntu? [closed]
I have R 2.12.1 installed in my ubuntu, and I'd like upgrade to lastest version 2.15, how can achieve that ? Thanks
1 Answ...
Eclipse reported “Failed to load JNI shared library” [duplicate]
...f you're unsure of what version (64-bit or 32-bit) of Eclipse you have installed, you can determine that a few different ways. See How to find out if an installed Eclipse is 32 or 64 bit version?
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XPath to select Element by attribute value
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Note that // selects and searches over all nodes of the document which can be slow. Instead, if the structure of the document is known then use a proper path, like suggested in Gilles' answer below.
– Jens
Apr 26 '16 at 21:10...
Tool for sending multipart/form-data request [closed]
...deo on sending multipart/form-data requests to explain this better.
Actually, Postman can do this. Here is a screenshot
Newer version : Screenshot captured from postman chrome extension
Another version
Older version
Make sure you check the comment from @maxkoryukov
Be careful with ex...
How do I create a user with the same privileges as root in MySQL/MariaDB? [closed]
...oot mysql
CREATE USER 'monty'@'localhost' IDENTIFIED BY 'some_pass';
GRANT ALL PRIVILEGES ON *.* TO 'monty'@'localhost' WITH GRANT OPTION;
CREATE USER 'monty'@'%' IDENTIFIED BY 'some_pass';
GRANT ALL PRIVILEGES ON *.* TO 'monty'@'%' WITH GRANT OPTION;
CREATE USER 'admin'@'localhost';
GRANT RELOAD,PR...
What is the .idea folder?
When I create a project in JetBrains WebStorm, a folder called .idea gets created. Is it okay if I delete it? Will it affect my project?
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What is the difference between .cc and .cpp file suffix? [duplicate]
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Conventions.
Historically, the suffix for a C++ source file was .C.
This caused a few problems the first time C++ was ported
to a system where case wasn't significant in the filename.
Different users adopted different solutions: .cc,
.cpp, .cxx ...
Error: invalid_client no application name
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No, once you add the product name it will work. That's all I had to do.
– d_ethier
Mar 20 '14 at 20:50
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