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When to catch java.lang.Error?
... i'd suspect its better in those cases to fail the daemon with proper alerts then to have the possibility of it staying alive as some etherial ghost on a failed jvm where it might give the false pretext that it is really alive and doing something
– Andrew Norman
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Unix shell script find out which directory the script file resides?
Basically I need to run the script with paths related to the shell script file location, how can I change the current directory to the same directory as where the script file resides?
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React JSX: selecting “selected” on selected option
...tState({value: event.target.value});
handleSubmit = (event) => {
alert('Your favorite flavor is: ' + this.state.value);
event.preventDefault();
}
render() {
return (
<form onSubmit={this.handleSubmit}>
<label>
Pick your favorite flavor:
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load scripts asynchronously
...ns for async loading:
//this function will work cross-browser for loading scripts asynchronously
function loadScript(src, callback)
{
var s,
r,
t;
r = false;
s = document.createElement('script');
s.type = 'text/javascript';
s.src = src;
s.onload = s.onreadystatechange = func...
Script Tag - async & defer
... a couple of questions about the attributes async & defer for the <script> tag which to my understanding only work in HTML5 browsers.
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Determining whether jQuery has not found any element
...e { /* code if not found */ }
You're getting an object returned from that alert because jQuery (almost) always returns the "jQuery object" when you use it, which is a wrapper for the elements jQuery's found that permits method chaining.
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this.setState isn't merging states as I would expect
...gt; _.merge({}, previousState, { selected: { name: "Barfood"} }), () => alert(this.state.selected));
I used merge because extend discards the other properties otherwise.
React Immutability example:
import update from "react-addons-update";
this.setState((previousState) => update(previousS...
unique object identifier in javascript
...e Object.prototype.a then "a" will be visible when you do for (prop in {}) alert(prop); So you have to make a compromise between augmenting Object.prototype and being able to iterate through record like objects using a for..in loop. This is a serious problem for libraries
– A...
How can I add or update a query string parameter?
...url
var u = new Url;
u.query.param='value'; // adds or replaces the param
alert(u)
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Reliable way for a Bash script to get the full path to itself [duplicate]
I have a Bash script that needs to know its full path. I'm trying to find a broadly-compatible way of doing that without ending up with relative or funky-looking paths. I only need to support Bash, not sh, csh, etc.
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