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How can I view the source code for a function?
...) is telling you that t() is a (S3) generic function that has methods for different object classes.
The S3 method dispatch system
For S3 classes, you can use the methods function to list the methods for a particular generic function or class.
> methods(t)
[1] t.data.frame t.default t.ts* ...
How to display long messages in logcat
I am trying to display long message on logcat. If the length of message is more than 1000 characters, it gets broken.
10 A...
Inline functions in C#?
...y "force" was used here. Since there were a few downvotes, I'll try to clarify the term. As in the comments and the documentation, The method should be inlined if possible. Especially considering Mono (which is open), there are some mono-specific technical limitations considering inlining or more ge...
SQL Server Text type vs. varchar data type [closed]
...
If you're using SQL Server 2005 or later, use varchar(MAX). The text datatype is deprecated and should not be used for new development work. From the docs:
Important
ntext , text, and image data types will be removed...
How to get the first item from an associative PHP array?
If I had an array like:
15 Answers
15
...
How to append to a file in Node?
...('fs');
fs.appendFile('message.txt', 'data to append', function (err) {
if (err) throw err;
console.log('Saved!');
});
Synchronously:
const fs = require('fs');
fs.appendFileSync('message.txt', 'data to append');
But if you append repeatedly to the same file, it's much better to reuse the ...
Read data from SqlDataReader
...
If you use indexes like reader.GetString(0) will it use the first column you selected in your query or the firstt column on the table. I have a table with 3 columns in order: ID, Dir, Email. My command selects dir and emai...
Datatype for storing ip address in SQL Server
...55.255.255.255) being just the display conversion of its binary content).
If you do it this way, you will want functions to convert to and from the textual-display format:
Here's how to convert the textual display form to binary:
CREATE FUNCTION dbo.fnBinaryIPv4(@ip AS VARCHAR(15)) RETURNS BINARY...
Is there an MD5 Fixed Point where md5(x) == x?
...so have to be 128 bits long. Assuming that the MD5 sum of any string is uniformly distributed over all possible sums, then the probability that any given 128-bit string is a fixed point is 1/2128.
Thus, the probability that no 128-bit string is a fixed point is (1 − 1/2128)2128, so the probabili...
In which order should floats be added to get the most precise result?
...e are 1 billion values equal to 1 / (1 billion), and one value equal to 1. If the 1 comes first, then the sum will come to 1, since 1 + (1 / 1 billion) is 1 due to loss of precision. Each addition has no effect at all on the total.
If the small values come first, they will at least sum to something...