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WaitAll vs WhenAll
...een Task.WaitAll() and Task.WhenAll() from the Async CTP ?
Can you provide some sample code to illustrate the different use cases ?
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HTML / CSS How to add image icon to input type=“button”?
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background-position: <left|right>;
padding-<left|right>: <width of image>px;
It's usually a little easier to use a button with an img inside:
<button type="submit"><img> Text</button>
However the browser implementations of button for submitting are inconsist...
How to move screen without moving cursor in Vim?
...it before, you'll keep using it, by whatever map. Risk breaking Vim before files/user/system.
– John P
Aug 9 '17 at 22:59
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How to use System.Net.HttpClient to post a complex type?
...questMessage<T> has been removed. This :
new HttpRequestMessage<Widget>(widget)
will no longer work.
Instead, from this post, the ASP.NET team has included some new calls to support this functionality:
HttpClient.PostAsJsonAsync<T>(T value) sends “application/json”
HttpCli...
What is the difference between Debug and Release in Visual Studio?
...bother with generating extensive debug symbol information. That's the .PDB file you might have noticed and it allows the debugger to figure out which assembly instructions corresspond to which line of code, etc.
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Print all but the first three columns
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awk '{for(i=1;i<4;i++) $i="";print}' file
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How to position a table at the center of div horizontally & vertically
..., you can set left and right margin to auto:
<style>
#test {
width:100%;
height:100%;
}
table {
margin: 0 auto; /* or margin: 0 auto 0 auto */
}
</style>
To center it vertically, the only way is to use javascript:
var tableMarginTop = Math.round( (testHeight - tab...
When is a CDATA section necessary within a script tag?
...ult. This is not an issue with scripts that are stored in external source files, but for any inline JavaScript in XHTML you will probably want to use a CDATA section.
Note that many XHTML pages were never intended to be parsed as XML in which case this will not be an issue.
For a good writeup on ...
Multiline string literal in C#
...erbatim string literal:
string query = @"SELECT foo, bar
FROM table
WHERE id = 42";
You also do not have to escape special characters when you use this method, except for double quotes as shown in Jon Skeet's answer.
shar...
Django dump data for a single model?
... command in Django 1.0. However you could use a script to export the JSON file, and load it using loaddata:
from django.core import serializers
from myproject.myapp import models
data = serializers.serialize("json", models.MyModel.objects.all())
out = open("mymodel.json", "w")
out.write(data)
out....