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Ruby on Rails. How do I use the Active Record .build method in a :belongs to relationship?
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@article = user.articles.build(:title => "MainTitle")
@article.save
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Leaflet - How to find existing markers, and delete markers?
... JSFiddle code . Also here is the full page demo.
Adding the marker :
// Script for adding marker on map click
map.on('click', onMapClick);
function onMapClick(e) {
var geojsonFeature = {
"type": "Feature",
"properties": {},
"geometry": {
"type": "Poi...
How do you increase the max number of concurrent connections in Apache?
....org/web/20160415001028/http://www.genericarticles.com/mediawiki/index.php?title=How_to_optimize_apache_web_server_for_maximum_concurrent_connections_or_increase_max_clients_in_apache
ServerLimit 16
StartServers 2
MaxClients 200
MinSpareThreads 25
MaxSpareThreads 75
ThreadsPerChild 25
First of al...
Find unused npm packages in package.json
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NB. depcheck doesn't take into account packages used in scripts specified in package.json
– Javier Arias
Oct 2 '18 at 15:02
19
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How can I convert a string to upper- or lower-case with XSLT?
...="msxsl">
<xsl:output method="xml" indent="yes"/>
<msxsl:script implements-prefix="utils" language="C#">
<![CDATA[
public string ToLower(string stringValue)
{
string result = String.Empty;
if(!String.IsNullOrEmpty(stringValue))
{
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Is there an equivalent to CTRL+C in IPython Notebook in Firefox to break cells that are running?
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UPDATE: Turned my solution into a stand-alone python script.
This solution has saved me more than once. Hopefully others find it useful. This python script will find any jupyter kernel using more than cpu_threshold CPU and prompts the user to send a SIGINT to the kernel (Keybo...
Can I apply a CSS style to an element name?
...element, then you can target other element with there attribute.
[title~=flower] {
border: 5px solid yellow;
}
<img src="klematis.jpg" title="klematis flower" width="150" height="113">
<img src="img_flwr.gif" title="flower" width="224" height="162">
&l...
口袋短片：参考抖音的原生应用案例 · App Inventor 2 中文网
... function HideORDispFeedback() { $("#feedback").toggle();}function makeTitleDraggable(element, titleElement) { let isDragging = false; let offsetX, offsetY; // 只在标题栏上按下时开始拖动 titleElement.onmousedown = function(e) { isDragging = true; offset...
Python non-greedy regexes
...havior isn’t desired; if the RE <.*> is matched against '<H1>title</H1>', it will match the entire string, and not just '<H1>'. Adding '?' after the qualifier makes it perform the match in non-greedy or minimal fashion; as few characters as possible will be matched. Using ....
Specify width in *characters*
...it really is possible.
The same logic could however be implemented in Javascript. I'm using ubiquitous jQuery here:
<html>
<head>
<style>
body { font-size: 20px; font-family: Monospace; }
</style>
<script
type="text/javascript"
src ="htt...