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Combine two ActiveRecord::Relation objects
...
If you want to combine using AND (intersection), use merge:
first_name_relation.merge(last_name_relation)
If you want to combine using OR (union), use or†:
first_name_relation.or(last_name_relation)
† Only in ActiveRecord 5+; for 4.2 install the where-or backport.
...
Wait for page load in Selenium
...ere
You can expect to show some element. something like in C#:
WebDriver _driver = new WebDriver();
WebDriverWait _wait = new WebDriverWait(_driver, new TimeSpan(0, 1, 0));
_wait.Until(d => d.FindElement(By.Id("Id_Your_UIElement"));
...
How to handle WndProc messages in WPF?
...
WM_MOUSEWHEEL for example, the only way to reliably trap those messages was by adding the WndProc to a WPF window. This worked for me, whereas the official MouseWheelEventHandler simply didn't work as expected. I was unable t...
How do I find out my python path using python?
...ent variable. To query the variable directly, use:
import os
try:
user_paths = os.environ['PYTHONPATH'].split(os.pathsep)
except KeyError:
user_paths = []
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Deserialize JSON into C# dynamic object?
...micObject
{
private readonly IDictionary<string, object> _dictionary;
public DynamicJsonObject(IDictionary<string, object> dictionary)
{
if (dictionary == null)
throw new ArgumentNullException("dictionary");
_dictionary...
How to delete a character from a string using Python
...o), in version 3.X python you should use "//" instead. Also, the line from __future__ import division at the beginning of your script will make version 2.X python act like version 3.X
– Michael Dunn
Aug 24 '10 at 20:29
...
Convert object string to JSON
...hout quote with valid double quote
.replace(/([\$\w]+)\s*:/g, function(_, $1){return '"'+$1+'":'})
// replacing single quote wrapped ones to double quote
.replace(/'([^']+)'/g, function(_, $1){return '"'+$1+'"'})
}
Result
var invalidJSON = "{ hello: 'world',foo:1, bar ...
How do I reference a javascript object property with a hyphen in it?
...re not allowed in js variables.
This regex pretty much sums it up
[a-zA-Z_$][0-9a-zA-Z_$]*
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Do I have to guard against SQL injection if I used a dropdown?
...pect.
$possibleOptions = array('All', 'Large', 'Medium', 'Small');
if(in_array($_POST['size'], $possibleOptions)) {
// Expected
} else {
// Not Expected
}
Then use mysqli_* if you are using a version of php >= 5.3.0 which you should be, to save your result. If used correctly this wil...
What do the &,
...ur example
development: &default
adapter: postgresql
database: dev_development
test: &test
<<: *default
database: test_test
actually expand to
development: &default
adapter: postgresql
database: dev_development
test: &test
adapter: postgresql # from th...