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How to use multiple AWS Accounts from the command line?
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You should be able to use the following command-options in lieu of the EC2_PRIVATE_KEY (and even EC2_CERT) environment variables:
-K <private key>
-C <certificate>
You can put these inside aliases, e.g.
alias ec2-describe-instances1 ec2-describe-instan...
Using scanf() in C++ programs is faster than using cin?
...ough streams provide a lot of type safety, and do not have to parse format strings at runtime, it usually has an advantage of not requiring excessive memory allocations (this depends on your compiler and runtime). That said, unless performance is your only end goal and you are in the critical path t...
Find rows with multiple duplicate fields with Active Record, Rails & Postgres
...find records with duplicate values across multiple columns using Postgres, and Activerecord?
5 Answers
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Alter a MySQL column to be AUTO_INCREMENT
... The only thing that may be influenced by the number is the display width, and it is up to the client to do that. But don't be deceived and think that it works like it does for VARCHAR and DECIMAL types - in those cases, the amount of data you can store in there is actually specified, whereas a part...
How can I determine if a date is between two dates in Java? [duplicate]
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Here you go:
public static void main(String[] args) throws ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("MM/dd/yyyy");
String oeStartDateStr = "04/01/";
String oeEndDateStr = "11/14/";
Calendar cal = Calendar.ge...
How do I restrict a float value to only two places after the decimal point in C?
... just want to round the number for output purposes, then the "%.2f" format string is indeed the correct answer. However, if you actually want to round the floating point value for further computation, something like the following works:
#include <math.h>
float val = 37.777779;
float rounde...
How to compute the similarity between two text documents?
...idf
pairwise_similarity = tfidf * tfidf.T
or, if the documents are plain strings,
>>> corpus = ["I'd like an apple",
... "An apple a day keeps the doctor away",
... "Never compare an apple to an orange",
... "I prefer scikit-learn to Orange",
... ...
Call a controller function from a directive without isolated scope in AngularJS
...on,
<button ... confirm-action="doIt()">Do It</button>
is the string "doIt()", and you can't call a string, e.g. "doIt()"().
Your question really is:
How do I call a function when I have its name as a string?
In JavaScript, you mostly call functions using dot notation, like this:
some...
Can you help me understand Moq Callback?
...ue), () => mock.Object.Bar(false));
Console.WriteLine("Invocations: " + String.Join(", ", cq));
// output:
// Invocations: True, False
BTW don't get confused by the misleading "before Returns" and "after Returns" distinction. It is merely a technical distinction of whether your custom code wil...
How to detect the OS from a Bash script?
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From a quick glance, the backticks could resemble a string.
– Harrison Powers
Mar 31 '14 at 0:53
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