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Fastest way to check if a string matches a regexp in ruby?
...y
require 'benchmark'
str = "aacaabc"
re = Regexp.new('a+b').freeze
N = 4_000_000
Benchmark.bm do |b|
b.report("str.match re\t") { N.times { str.match re } }
b.report("str =~ re\t") { N.times { str =~ re } }
b.report("str[re] \t") { N.times { str[re] } }
b.report("re =~ str...
Disable messages upon loading a package
...y R script is being used for further analysis I want to completely disable all of this output. How do I do that? Furthermore, I'd prefer to do it without having to modify ROCR at all, so that future users of this script don't have to do that either.
...
Difference between Destroy and Delete
...
Basically destroy runs any callbacks on the model while delete doesn't.
From the Rails API:
ActiveRecord::Persistence.delete
Deletes the record in the database and freezes this instance to reflect that no changes should be ...
Can anyone explain CreatedAtRoute() to me?
...ss CompanyController : Controller
{
private ICompanyRepository _companyRepository;
public CompanyController(ICompanyRepository companyRepository)
{
_companyRepository = companyRepository;
}
[HttpGet("{id}", Name="GetCompany")]
public ...
.NET data structures: ArrayList, List, HashTable, Dictionary, SortedList, SortedDictionary — Speed,
...d Visual Basic books talk about them to a certain extent, but they never really go into any real detail.
13 Answers
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How do I put variables inside javascript strings?
... => args[i++]);
}
Usage:
s = parse('hello %s, how are you doing', my_name);
This is only a simple example and does not take into account different kinds of data types (like %i, etc) or escaping of %s. But I hope it gives you some idea. I'm pretty sure there are also libraries out there whic...
How to convert an Int to a String of a given length with leading zeros to align?
...this Q&A becomes the canonical compendium,
scala> import java.text._
import java.text._
scala> NumberFormat.getIntegerInstance.asInstanceOf[DecimalFormat]
res0: java.text.DecimalFormat = java.text.DecimalFormat@674dc
scala> .applyPattern("0000000")
scala> res0.format(123)
res2: S...
Access Denied for User 'root'@'localhost' (using password: YES) - No Privileges?
...ost, User, Password) VALUES ('%', 'root', password('YOURPASSWORD'));
GRANT ALL ON *.* TO 'root'@'%' WITH GRANT OPTION;
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Get free disk space
...
I know this answer is ancient, but you usually need to use AvailableFreeSpace as @knocte says. AvailableFreeSpace lists how much is actually available for the user (due to quotos). TotalFreeSpace lists what is available on the disk, irregardless of what the user can ...
Add list to set?
...rticle. Pythons hashing algorithms are explained on effbot.org and pythons __hash__ function in the python reference.
Some facts:
Set elements as well as dictionary keys have to be hashable
Some unhashable datatypes:
list: use tuple instead
set: use frozenset instead
dict: has no official count...