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Compare two objects in Java with possible null values
...if
* both the arguments were instances of String.</i></p>
* @param a first CharSequence to check
* @param b second CharSequence to check
* @return true if a and b are equal
*/
public static boolean equals(CharSequence a, CharSequence b) {
if (a == b) return true;
int length;...
Is it good practice to make the constructor throw an exception? [duplicate]
...e way for a constructor to indicate that there is a problem; e.g. that the parameters are invalid.
I also think that throwing checked exceptions can be OK1, assuming that the checked exception is 1) declared, 2) specific to the problem you are reporting, and 3) it is reasonable to expect the caller...
How do I call a JavaScript function on page load?
...
If you want the onload method to take parameters, you can do something similar to this:
window.onload = function() {
yourFunction(param1, param2);
};
This binds onload to an anonymous function, that when invoked, will run your desired function, with whatever...
Need to ZIP an entire directory using Node.js
...s in their code (like me).
const archiver = require('archiver');
/**
* @param {String} source
* @param {String} out
* @returns {Promise}
*/
function zipDirectory(source, out) {
const archive = archiver('zip', { zlib: { level: 9 }});
const stream = fs.createWriteStream(out);
return new P...
Difference between Observer, Pub/Sub, and Data Binding
... answered Mar 24 '13 at 7:25
ParamParam
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...
How to log SQL statements in Grails
... to your log4j block:
log4j = {
// Enable Hibernate SQL logging with param values
trace 'org.hibernate.type'
debug 'org.hibernate.SQL'
//the rest of your logging config
// ...
}
share
|
...
How do I concatenate strings and variables in PowerShell?
...soc.Name + " - " + $assoc.Owner)
Your code is being interpreted as many parameters being passed to Write-Host. Wrapping it up inside parentheses will concatenate the values and then pass the resulting value as a single parameter.
...
Making a request to a RESTful API using python
...
"requests.get" does not take "data" parameter. It could take optional "params" parameter which is usually a dict carrying query string. If a payload is necessary to fetch data (such as the example posted in question), then "requests.post" needs to be used. Addi...
form_for with nested resources
...ted in controller: @post and @comment for the post, eg:
@post = Post.find params[:post_id]
@comment = Comment.new(:post=>@post)
Then in view:
<%= form_for([@post, @comment]) do |f| %>
Be sure to explicitly define the array in the form_for, not just comma separated like you have above....
Copy folder recursively in node.js
...equire("fs")
const path = require("path")
/**
* Look ma, it's cp -R.
* @param {string} src The path to the thing to copy.
* @param {string} dest The path to the new copy.
*/
var copyRecursiveSync = function(src, dest) {
var exists = fs.existsSync(src);
var stats = exists && fs.statS...