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Auto margins don't center image in page
...of the element to 50% (left:50%;) but that will not center it correctly in order for the element to be centered correctly you need to give it a margin of minus half of it`s width, that will center your element perfectly
here is an example: http://jsfiddle.net/35ERq/3/
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How to use HTML to print header and footer on every printed page of a document?
...ments would overlap with the footer I wanted at the bottom of the page. In order to get around this, I used the following CSS:
footer {
font-size: 9px;
color: #f00;
text-align: center;
}
@page {
size: A4;
margin: 11mm 17mm 17mm 17mm;
}
@media print {
footer {
position: fixed;
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Android – Listen For Incoming SMS Messages
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@Sermilion You have to manually allow permission to read SMS in application manager of the mobile.
– Sanjay Kushwah
Mar 9 '17 at 9:39
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How to find a Java Memory Leak
... supposed to be able to find the root reference ( ref ) or whatever it is called. Basically, I can tell that there are several hundred megabytes of hash table entries ([java.util.HashMap$Entry or something like that), but maps are used all over the place... Is there some way to search for large maps...
What is the purpose of XORing a register with itself? [duplicate]
...ad dependency on eax, so the execution time is the same" The processor actually does even better: it just executes a register rename internally, and doesn't even do anything at all with eax.
– kquinn
Sep 8 '09 at 22:16
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Application Skeleton to support multiple screens
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Highly active question. Earn 10 reputation in order to answer this question. The reputation requirement helps protect this question from spam and non-answer activity.
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Is there a way to instantiate a class by name in Java?
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To make it easier to get the fully qualified name of a class in order to create an instance using Class.forName(...), one could use the Class.getName() method. Something like:
class ObjectMaker {
// Constructor, fields, initialization, etc...
public Object makeObject(Class<?&g...
Finding child element of parent pure javascript
...esire.
Edit: Now that I think about it, you could just use querySelectorAll to get decendents of parent having a class name of child1:
children = document.querySelectorAll('.parent .child1');
The difference between qS and qSA is that the latter returns all elements matching the selector, while...
Practical use of `stackalloc` keyword
... InfoBufferLength,
PDWORD ReturnedLength);
In order to call it in C# through interop,
[DllImport("Cfapi.dll")]
public static unsafe extern HResult CfGetPlaceholderInfo(IntPtr fileHandle, uint infoClass, void* infoBuffer, uint infoBufferLength, out uint returnedLength);...
Understanding what 'type' keyword does in Scala
... determined by the reference to an object (aka an instance of a class).
In order to implement this scenario, you need to define class Grass inside the Cow, i.e., Cow is the outer class and Grass is the inner class. The structure will be like this:
class Cow extends Animal {
class Grass exten...