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How to construct a timedelta object from a simple string
...r)
if not parts:
return
parts = parts.groupdict()
time_params = {}
for (name, param) in parts.iteritems():
if param:
time_params[name] = int(param)
return timedelta(**time_params)
>>> from parse_time import parse_time
>>> parse_time...
How do I create multiple submit buttons for the same form in Rails?
...de your controller, the submitted button's value will be identified by the parameter commit. Check the value to do the required processing:
def <controller action>
if params[:commit] == 'A'
# A was pressed
elsif params[:commit] == 'B'
# B was pressed
end
end
How...
Ruby: Easiest Way to Filter Hash Keys?
...tch. This will give you a new Hash with just the choices in it.
choices = params.select { |key, value| key.to_s.match(/^choice\d+/) }
or you can use delete_if and modify the existing Hash e.g.
params.delete_if { |key, value| !key.to_s.match(/choice\d+/) }
or if it is just the keys and not the ...
Use URI builder in Android or create URL with variables
....com")
.appendPath("turtles")
.appendPath("types")
.appendQueryParameter("type", "1")
.appendQueryParameter("sort", "relevance")
.fragment("section-name");
String myUrl = builder.build().toString();
shar...
Simplest two-way encryption using PHP
... /**
* Encrypts (but does not authenticate) a message
*
* @param string $message - plaintext message
* @param string $key - encryption key (raw binary expected)
* @param boolean $encode - set to TRUE to return a base64-encoded
* @return string (raw binary)
*/
...
High Quality Image Scaling Library [closed]
...e specified width and height.
/// </summary>
/// <param name="image">The image to resize.</param>
/// <param name="width">The width to resize to.</param>
/// <param name="height">The height to resize to.</param>
/// &l...
how to permit an array with strong parameters
...
This https://github.com/rails/strong_parameters seems like the relevant section of the docs:
The permitted scalar types are String, Symbol, NilClass, Numeric, TrueClass, FalseClass, Date, Time, DateTime, StringIO, IO,
ActionDispatch::Http::UploadedFile and...
浅谈Heatmap：网页热点图生成原理 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...言：
#!/usr/bin/awk -f
BEGIN {
FS="&";
}
NF == 4 {
param["page_x"] = "0";
param["page_y"] = "0";
param["screen_width"] = "0";
param["screen_height"] = "0";
split($0, query, "&");
for (key in query) {
split(query[key], item, "...
How to get the last value of an ArrayList
...Returns the first item in the given list, or null if not found.
*
* @param <T> The generic list type.
* @param list The list that may have a first item.
*
* @return null if the list is null or there is no first item.
*/
public static <T> T getFirst( final List<T&gt...
What's the “big idea” behind compojure routes?
.... As an added convenience, defroutes-defined handlers are wrapped in wrap-params and wrap-cookies implicitly.
Here's an example of a more complex route:
(def echo-typed-url-route
(GET "*" {:keys [scheme server-name server-port uri]}
(str (name scheme) "://" server-name ":" server-port uri))...