大约有 40,000 项符合查询结果（耗时：0.0770秒） [XML]
What size should apple-touch-icon.png be for iPad and iPhone?
...80x180 px and one for android 192x192 px (declared in site.webmanifest).
<link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
<link rel="manifest" href="/site.webmanifest">
#### site.webmanifest
{
"name": "",
"short_name": "",
"icons": [
{
...
How do I get bit-by-bit data from an integer value in C?
...
If you want the k-th bit of n, then do
(n & ( 1 << k )) >> k
Here we create a mask, apply the mask to n, and then right shift the masked value to get just the bit we want. We could write it out more fully as:
int mask = 1 << k;
int masked_n = n...
What is href=“#” and why is it used?
...
About hyperlinks:
The main use of anchor tags - <a></a> - is as hyperlinks. That basically means that they take you somewhere. Hyperlinks require the href property, because it specifies a location.
Hash:
A hash - # within a hyperlink specifies an html element...
How to get ALL child controls of a Windows Forms form of a specific type (Button/Textbox)?
...sed (even includes the recursion you were looking for)
public IEnumerable<Control> GetAll(Control control,Type type)
{
var controls = control.Controls.Cast<Control>();
return controls.SelectMany(ctrl => GetAll(ctrl,type))
.Concat(controls)
...
Finding all possible combinations of numbers to reach a given sum
...problem can be solved with a recursive combinations of all possible sums filtering out those that reach the target. Here is the algorithm in Python:
def subset_sum(numbers, target, partial=[]):
s = sum(partial)
# check if the partial sum is equals to target
if s == target:
pri...
jQuery delete all table rows except first
...ry with the thead and tbody elements in your table.
Example of a table:
<table id="tableId">
<thead>
<tr><th>Col1</th><th>Col2</th></tr>
</thead>
<tbody>
<tr><td>some</td><td>content</td></tr>
...
The ViewData item that has the key 'MY KEY' is of type 'System.String' but must be of type 'IEnumera
...the same code used before, so repeat this:
var db = new DB();
IEnumerable<SelectListItem> basetypes = db.Basetypes.Select(
b => new SelectListItem { Value = b.basetype, Text = b.basetype });
ViewData["basetype"] = basetypes;
before the return View(meal) in the [HttpPost] method.
exa...
ASP MVC href to a controller/view
...a couple of ways that you can accomplish this. You can do the following:
<li>
@Html.ActionLink("Clients", "Index", "User", new { @class = "elements" }, null)
</li>
or this:
<li>
<a href="@Url.Action("Index", "Users")" class="elements">
<span>Clie...
How to generate a random number in C++?
...plication on the same second - you use the same seed value - thus your result is the same of course (as Martin York already mentioned in a comment to the question).
Actually you should call srand(seed) one time and then call rand() many times and analyze that sequence - it should look random.
EDIT:
...
What is the difference between IEqualityComparer and IEquatable?
I want to understand the scenarios where IEqualityComparer<T> and IEquatable<T> should be used.
The MSDN documentation for both looks very similar.
...