大约有 44,000 项符合查询结果（耗时：0.0697秒） [XML]
What's the difference between Require.js and simply creating a element in the DOM? [closed]
What's the difference between using Require.JS amd simply creating a <script> element in the DOM?
4 Answers
...
Java 8 Iterable.forEach() vs foreach loop
Which of the following is better practice in Java 8?
8 Answers
8
...
What does character set and collation mean exactly?
...
From MySQL docs:
A character set is a set of symbols
and encodings. A collation is a set of
rules for comparing characters in a
character set. Let's make the
distinction clear with an example of
an imaginary character set.
Suppose that we have an alphabet with
four letter...
Setting action for back button in navigation controller
I'm trying to overwrite the default action of the back button in a navigation controller. I've provided a target an action on the custom button. The odd thing is when assigning it though the backbutton attribute it doesn't pay attention to them and it just pops the current view and goes back to the...
What is the use case of noop [:] in bash?
I searched for noop in bash (:), but was not able to find any good information. What is the exact purpose or use case of this operator?
...
surface plots in matplotlib
I have a list of 3-tuples representing a set of points in 3D space. I want to plot a surface that covers all these points.
...
delete vs delete[] operators in C++
What is the difference between delete and delete[] operators in C++?
7 Answers
7
...
var self = this?
Using instance methods as callbacks for event handlers changes the scope of this from "My instance" to "Whatever just called the callback" . So my code looks like this
...
Meaning of $? (dollar question mark) in shell scripts
...? # echoes 0
false
echo $? # echoes 1
From the manual: (acessible by calling man bash in your shell)
$? Expands to the exit status of the most recently executed foreground pipeline.
By convention an exit status of 0 means success, and non-zero return status means failure. ...
Escape a string for a sed replace pattern
In my bash script I have an external (received from user) string, which I should use in sed pattern.
14 Answers
...