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Differences between Ant and Maven [closed]
Could someone tell me the differences between Ant and Maven? I have never used either. I understand that they are used to automate the building of Java projects, but I do not know where to start from.
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Jquery live() vs delegate() [duplicate]
...enefits of using delegate to be so substantial as to be overwhelming.
The one benefit of live is that its syntax is very close to that of bind:
$('a.myClass').live('click', function() { ... });
delegate, however, uses a slightly more verbose syntax:
$('#containerElement').delegate('a.myClass', ...
How do I pass a class as a parameter in Java?
...try {
Object ob = c.newInstance();
} catch (InstantiationException ex) {
Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
Logger.getLogger(App.class.getName()).log(Level.SEVERE, null, ex);
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Set the value of an input field
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This is one way of doing it:
document.getElementById("mytext").value = "My value";
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What is the preferred syntax for initializing a dict: curly brace literals {} or the dict() function
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This is exactly why one might prefer the dict() method for initialization, it forces the dictionary keys to be valid identifiers, so they are compatible with, for example, **kwargs, and keys are valid attribute names.
– Ruf...
Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...pread(tmp, y, z)
## x a b c
## 1 x 1 2 3
## 2 y 3 3 2
Using reshape2:
One of the first steps toward the tidyverse was the reshape2 package.
To get a matrix use acast:
library(reshape2)
acast(tmp, x~y, value.var="z")
## a b c
## x 1 2 3
## y 3 3 2
Or to get a data frame, use dcast, as here...
How to overlay images
I want to overlay one image with another using CSS. An example of this is the first image (the background if you like) will be a thumbnail link of a product, with the link opening a lightbox / popup showing a larger version of the image.
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Is modern C++ becoming more prevalent? [closed]
...ou could learn about if you really wanted to. And there was certainly no one telling me that destructors could be harnessed to help manage memory.
Today, everywhere I look I see RAII and SFINAE and STL and Boost and, well, Modern C++. Even people who are just getting started with the language s...
Ruby class instance variable vs. class variable
... What is the difference between self.things and self.class.things you mentioned in code ?
– cyborg
Jun 26 '18 at 7:53
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Reverse / invert a dictionary mapping
..., []).append(k). I used to be a defaultdict fanboy, but then I got screwed one too many times and concluded that actually explicit is better than implicit.
– alsuren
Nov 10 '10 at 14:55
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