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How to find where gem files are installed
...MS VERSION: 2.1.5
- RUBY VERSION: 2.0.0 (2013-06-27 patchlevel 247) [x86_64-darwin12.4.0]
- INSTALLATION DIRECTORY: /Users/ttm/.rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0
- RUBY EXECUTABLE: /Users/ttm/.rbenv/versions/2.0.0-p247/bin/ruby
- EXECUTABLE DIRECTORY: /Users/ttm/.rbenv/versions/2...
How do I get the directory that a program is running from?
...t argc, char* argv[])
{
std::string argv_str(argv[0]);
std::string base = argv_str.substr(0, argv_str.find_last_of("/"));
}
You can now just use this as a base for your relative path. So for example I have this directory structure:
main
----> test
----> src
----> bin
and...
How to pass variable from jade template file to a script file?
...avascript include file (just to keep things clean), but this is good for a demo.
app/controllers/index.js:
'use strict';
var config = require('../../config/config');
exports.render = function(req, res) {
res.render('index', {
user: req.user ? JSON.stringify(req.user) : "null",
//new lin...
Detect if an input has text in it using CSS — on a page I am visiting and do not control?
...this jsBin page.
// ==UserScript==
// @name _Dynamically style inputs based on whether they are blank.
// @include http://YOUR_SERVER.COM/YOUR_PATH/*
// @grant GM_addStyle
// ==/UserScript==
/*- The @grant directive is needed to work around a design change
introduced in GM 1.0. It res...
test a file upload using rspec - rails
...::UploadedFile.new("path/to/file.ext", "mime/type")
*NOTE: My example is based on Sinatra, which extends Rack, but should work with Rails, which also uses Rack, TTBOMK
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What is the best algorithm for overriding GetHashCode?
...T, the GetHashCode method is used in a lot of places throughout the .NET base class libraries. Implementing it properly is especially important to find items quickly in a collection or when determining equality.
...
SQLAlchemy: print the actual query
...lDialect(),
compile_kwargs={'literal_binds': True},
).string
Demo:
# coding: UTF-8
from datetime import datetime
from decimal import Decimal
from literalquery import literalquery
def test():
from sqlalchemy.sql import table, column, select
mytable = table('mytable', column...
Set element focus in angular way
...
This solution is much more 'angular way' than id-based hack above.
– setec
Jul 27 '16 at 14:54
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...
List comprehension: Returning two (or more) items for each item
...
Double list comprehension:
[f(x) for x in range(5) for f in (f1,f2)]
Demo:
>>> f1 = lambda x: x
>>> f2 = lambda x: 10*x
>>> [f(x) for x in range(5) for f in (f1,f2)]
[0, 0, 1, 10, 2, 20, 3, 30, 4, 40]
...
HTML5 Canvas Resize (Downscale) Image High Quality?
...process (see demo at bottom).
Here is code for adding sharpen filter (it's based on a generic convolution filter - I put the weight matrix for sharpen inside it as well as a mix factor to adjust the pronunciation of the effect):
Usage:
sharpen(context, width, height, mixFactor);
The mixFactor is a ...