大约有 40,000 项符合查询结果（耗时：0.0468秒） [XML]
Name of this month (Date.today.month as name)
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HTML Select month with I18n:
<select>
<option value="">Choose month</option>
<%= 1.upto(12).each do |month| %>
<option value="<%= month %>"><%= I18n.t("date.month_names")[month] %></option>
<% e...
How do I use the ternary operator ( ? : ) in PHP as a shorthand for “if / else”?
...ay with the conditional operator. What you can do however, is echo the result of the conditional operator:
echo empty($address['street2']) ? "Street2 is empty!" : $address['street2'];
and this will display "Street is empty!" if it is empty, otherwise it will display the street2 address.
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How do you roll back (reset) a Git repository to a particular commit? [duplicate]
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git reset --hard <tag/branch/commit id>
Notes:
git reset without the --hard option resets the commit history, but not the files. With the --hard option the files in working tree are also reset. (credited user)
If you wish to commit...
Can someone explain collection_select to me in clear, simple terms?
...lect(
:post, # field namespace
:author_id, # field name
# result of these two params will be: <select name="post[author_id]">...
# then you should specify some collection or array of rows.
# It can be Author.where(..).order(..) or something like that.
# In your examp...
Why is Android Studio reporting “URI is not registered”? [closed]
...like Resharper and noticed that the IDE had some of their functionality built into it. Having now created a default new project, I added a new layout file and wanted to change the existing default 'hello world' example layout, and I got an "URI is not registered" error on the following lines:
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What is the proper #include for the function 'sleep()'?
...create, I use the sleep function. In the book it told me to put #include <stdlib.h> under the #include <stdio.h> part. This is supposed to get rid of the warning that says "Implicit declaration of function 'sleep' is invalid in C99". But for some reason after I put #include <stdl...
Advantages of using display:inline-block vs float:left in CSS
Normally, when we want to have multiple DIVs in a row we would use float: left , but now I discovered the trick of display:inline-block
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Get class that defined method
... class E(D,C): pass
>>> get_class_that_defined_method(A().test)
<class '__main__.A'>
>>> get_class_that_defined_method(A.test)
<class '__main__.A'>
>>> get_class_that_defined_method(B.test)
<class '__main__.A'>
>>> get_class_that_defined_method(...
Convert Enumeration to a Set/List
... Collections.list() to convert an Enumeration to a List in one line:
List<T> list = Collections.list(enumeration);
There's no similar method to get a Set, however you can still do it one line:
Set<T> set = new HashSet<T>(Collections.list(enumeration));
...
Read a file in Node.js
...n(req, res) {
console.log('server listening to localhost 8000');
});
<html>
<body>
<h1>My Header</h1>
<p>My paragraph.</p>
</body>
</html>
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