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is vs typeof
...aled class Class2 { }
struct Struct1 { }
struct Struct2 { }
Inference:
Calling GetType on structs is slower. GetType is defined on object class which can't be overridden in sub types and thus structs need to be boxed to be called GetType.
On an object instance, GetType is faster, but very margi...
MFC Grid control 2.27 - C/C++ - 清泛网移动版 - 专注C/C++及内核技术
...here are two main types of cell - fixed and non-fixed. Fixed cells are typically on the left and top of the grid and do not move when the grid is scrolled. Typically these contain column and row headings and are not editable. Non fixed cells make up the "interior" of the grid and can be edited and s...
Java system properties and environment variables
...he environment on start up. i.e. System.getenv(String name) does not dynamically read the value from the system at call time.
– Bohemian♦
May 25 '17 at 16:01
...
Need some clarification about beta/alpha testing on the developer console
... list. (Beta testing)
2. Closed testing - It means that you need to specifically add the user's Gmail into the list. (Alpha testing)
3. Staged rollout - This means we can provide the update to some percentage of users we currently have. Suppose 100 users are there and you rollout for 40% then only 4...
Comments in Android Layout xml
...
As other said, the comment in XML are like this
<!-- this is a comment -->
Notice that they can span on multiple lines
<!--
This is a comment
on multiple lines
-->
But they cannot be nested
<!-- This <!-...
How to check all checkboxes using jQuery?
... $('input:checkbox').not(this).prop('checked', this.checked);
});
Demo: Fiddle
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How to create json by JavaScript for loop?
... this should work:
<script>
// var status = document.getElementsByID("uniqueID"); // this works too
var status = document.getElementsByName("status")[0];
var jsonArr = [];
for (var i = 0; i < status.options.length; i++) {
jsonArr.push({
id: status.options[i].text,
o...
How do I check whether a checkbox is checked in jQuery?
... your existing code, you could therefore do this:
if(document.getElementById('isAgeSelected').checked) {
$("#txtAge").show();
} else {
$("#txtAge").hide();
}
However, there's a much prettier way to do this, using toggle:
$('#isAgeSelected').click(function() {
$("#txtAge").toggle...
Twitter Bootstrap CSS affecting Google Maps
...
With Bootstrap 2.0, this seemed to do the trick:
#mapCanvas img {
max-width: none;
}
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Multiple file upload in php
...TML
create div with id='dvFile';
create a button;
onclick of that button calling function add_more()
JavaScript
function add_more() {
var txt = "<br><input type=\"file\" name=\"item_file[]\">";
document.getElementById("dvFile").innerHTML += txt;
}
PHP
if(count($_FILES["item...