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Creating temporary files in bash
...
The mktemp(1) man page explains it fairly well:
Traditionally, many shell scripts take the name of the program with
the pid as a suffix and use that as a temporary file name. This kind
of naming scheme is predictable and the race condition i...
Why does this C++ snippet compile (non-void function does not return a value) [duplicate]
...ely with unpredictable results, to behaving during translation or program execution in a documented manner characteristic of the environment (with or without the issuance of a diagnostic message), to terminating a translation or execution (with the issuance of a diagnostic message).[...]
Although ...
getResourceAsStream() vs FileInputStream
...was trying to load a file in a webapp, and I was getting a FileNotFound exception when I used FileInputStream . However, using the same path, I was able to load the file when I did getResourceAsStream() .
What is the difference between the two methods, and why does one work while the other does...
Can I add jars to maven 2 build classpath without installing them?
Maven2 is driving me crazy during the experimentation / quick and dirty mock-up phase of development.
24 Answers
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Coding in Other (Spoken) Languages
... is: "does every single coder in the world know enough English to use the exact same reserved words as I do?"
Well.. English is not the subject here but programming language reserved words. I mean, when I started about 10 yrs ago, I didn't have any clue of English, and still I was able to program ...
How to return result of a SELECT inside a function in PostgreSQL?
...
Use RETURN QUERY:
CREATE OR REPLACE FUNCTION word_frequency(_max_tokens int)
RETURNS TABLE (txt text -- also visible as OUT parameter inside function
, cnt bigint
, ratio bigint) AS
$func$
BEGIN
RETURN QUERY
SELECT t.txt
, count(*) AS c...
How can I create directory tree in C++/Linux?
I want an easy way to create multiple directories in C++/Linux.
17 Answers
17
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How do I get currency exchange rates via an API such as Google Finance? [closed]
...t: http://finance.yahoo.com/d/quotes.csv?e=.csv&f=sl1d1t1&s=USDINR=X
This CSV was being used by a jQuery plugin called [Curry][1]. Curry has since (2017-08-29) moved to use fixer.io instead due to stability issues.
Might be useful if you need more than just a CSV.
(thanks to Keyo) Yahoo Que...
What is the difference between ? and Object in Java generics?
... some code to use Java generics properly. Most of the time it's doing an excellent job of inferring types, but there are some cases where the inferred type has to be as generic as possible: Object. But Eclipse seems to be giving me an option to choose between a type of Object and a type of '?'.
...
Auto-loading lib files in Rails 4
...Foo::Bar
end
if you really wanna do some monkey patches in file like lib/extensions.rb, you may manually require it:
in config/initializers/require.rb:
require "#{Rails.root}/lib/extensions"
P.S.
Rails 3 Autoload Modules/Classes by Bill Harding.
And to understand what does Rails exactly do...