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What is the difference between `let` and `var` in swift?
...ge.” iBooks. https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewBook?id=881256329
EDIT
Because comments asking for adding other facts to the answer, converting this to community wiki answer. Feel free edit the answer to make it better.
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JS - get image width and height from the base64 code
...64 img encoded that you can find here . How can I get the height and the width of it?
4 Answers
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How to count objects in PowerShell?
As I'm reading in the PowerShell user guide, one of the core PowerShell concepts is that commands accept and return objects instead of text. So for example, running get-alias returns me a number of System.Management.Automation.AliasInfo objects:
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How can you do paging with NHibernate?
For example, I want to populate a gridview control in an ASP.NET web page with only the data necessary for the # of rows displayed. How can NHibernate support this?
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Pass complex parameters to [Theory]
...ngTests2
{
[Theory, PropertyData(nameof(SplitCountData))]
public void SplitCount(string input, int expectedCount)
{
var actualCount = input.Split(' ').Count();
Assert.Equal(expectedCount, actualCount);
}
public static IEnumerable<object[]> SplitCountData
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How do I automatically update a timestamp in PostgreSQL
...ate the column during insert, use a DEFAULT value:
CREATE TABLE users (
id serial not null,
firstname varchar(100),
middlename varchar(100),
lastname varchar(100),
email varchar(200),
timestamp timestamp default current_timestamp
)
Note that the value for that column can explicitly be...
SQL-Server: Error - Exclusive access could not be obtained because the database is in use
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Set the path to restore the file.
Click "Options" on the left hand side.
Uncheck "Take tail-log backup before restoring"
Tick the check box - "Close existing connections to destination database".
Click OK.
share
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How to fire AJAX request Periodically?
...ighlight a bit more advanced technique that I learned from this excellent video by Paul Irish: http://paulirish.com/2010/10-things-i-learned-from-the-jquery-source/
For periodic tasks that might end up taking longer than the repeat interval (like an HTTP request on a slow connection) it's best not ...
Download a file from NodeJS Server using Express
...so want to send a mime-type such as this:
res.setHeader('Content-type', 'video/quicktime');
If you want something more in-depth, here ya go.
var path = require('path');
var mime = require('mime');
var fs = require('fs');
app.get('/download', function(req, res){
var file = __dirname + '/uploa...
How do I make a semi transparent background?
... yes, IE supports rgba, its syntax is #ARGB and is written as filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#AARRGGBBAA,endColorstr=#AARRGGBBAA); its basically a gradient of a static color but with transparency.
– Tarun
Jan 27 '11 at 5:23
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