大约有 13,916 项符合查询结果（耗时：0.0218秒） [XML]
How to round to 2 decimals with Python?
... "Note The behavior of round() for floats can be surprising: for example, round(2.675, 2) gives 2.67 instead of the expected 2.68."
– Johnsyweb
Dec 9 '13 at 0:56
24
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Get query string parameters url values with jQuery / Javascript (querystring)
Anyone know of a good way to write a jQuery extension to handle query string parameters? I basically want to extend the jQuery magic ($) function so I can do something like this:
...
A JRE or JDK must be available in order to run Eclipse. No JVM was found after searching the followi
...
You can explicitly tell Eclipse where to find it. Open eclipse.ini and add the following lines to the top of the file:
-vm
/absolute/path/to/jre6/bin
Update: I just nailed down the root cause on my own Windows machine. The GlassF...
how to use sed, awk, or gawk to print only what is matched?
I see lots of examples and man pages on how to do things like search-and-replace using sed, awk, or gawk.
11 Answers
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Retrieve only the queried element in an object array in MongoDB collection
...operator, where the $ in a projection object field name represents the index of the field's first matching array element from the query. The following returns the same results as above:
db.test.find({"shapes.color": "red"}, {_id: 0, 'shapes.$': 1});
MongoDB 3.2 Update
Starting with the 3.2 rele...
Stretch background image css?
...
.style1 {
background: url(images/bg.jpg) no-repeat center center fixed;
-webkit-background-size: cover;
-moz-background-size: cover;
-o-background-size: cover;
background-size: cover;
}
Works in:
Safari 3+
Chrome Whatever+
IE 9+
Opera 10+ (Opera 9.5 supported background-size b...
How to disable all caps menu titles in Visual Studio
I assume the title is self explanatory. Just want to change the look of the Visual Studio 2012 not to show menu title in all capital letters.
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Using Case/Switch and GetType to determine the object [duplicate]
...where approriate. If this "type" is used for serialization then you'd be mixing concerns.
– Dave Van den Eynde
Apr 2 '09 at 9:27
add a comment
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How can I specify a local gem in my Gemfile?
...:
$ bundle config local.GEM_NAME /path/to/local/git/repository
This is extremely helpful if you're developing two gems or a gem and a rails app side-by-side.
Note though, that this only works when you're already using git for your dependency, for example:
# In Gemfile
gem 'rack', :github => ...
Detect if Android device has Internet connection
...n server via http.
public static boolean hasActiveInternetConnection(Context context) {
if (isNetworkAvailable(context)) {
try {
HttpURLConnection urlc = (HttpURLConnection) (new URL("http://www.google.com").openConnection());
urlc.setRequestProperty("User-Agent"...