大约有 40,000 项符合查询结果（耗时：0.0421秒） [XML]
Storing time-series data, relational or non?
...
Create a file, name it 1_2.data. weired idea? what you get:
You save up to 50% of space because you don't need to repeat the fk_to_device and fk_to_metric value for every data point.
You save up even more space because you don't need any indices.
...
UnicodeDecodeError when reading CSV file in Pandas with Python
...
read_csv takes an encoding option to deal with files in different formats. I mostly use read_csv('file', encoding = "ISO-8859-1"), or alternatively encoding = "utf-8" for reading, and generally utf-8 for to_csv.
You can also use...
How can I disable HREF if onclick is executed?
...ttribute:
<a href="https://example.com/no-js-login" onclick="return yes_js_login();">Log in</a>
yes_js_login = function() {
// Your code here
return false;
}
Example: https://jsfiddle.net/FXkgV/289/
...
ASP.NET MVC 3 - Partial vs Display Template vs Editor Template
... <input name="@(idPrefix).Frequency"
id="@(idPrefix)_Frequency"
style="width: 50%;"
type="text"
value="@(defaultTimePoint.Frequency)"
data-bind="value: viewState.@(viewStatePrefix).RecurringTimepoints.Frequency"
...
Base 64 encode and decode example code
...Charsets:
// Sending side
byte[] data = text.getBytes(StandardCharsets.UTF_8);
String base64 = Base64.encodeToString(data, Base64.DEFAULT);
// Receiving side
byte[] data = Base64.decode(base64, Base64.DEFAULT);
String text = new String(data, StandardCharsets.UTF_8);
...
How to override and extend basic Django admin templates?
...tion has been converted to a django app, and is available in PyPi (pip/easy_install) as django-apptemplates: pypi.python.org/pypi/django-apptemplates
– Romløk
Oct 9 '12 at 9:19
9
...
Add string in a certain position in Python
...CB6
However if you like something like a function do as this:
def insert_dash(string, index):
return string[:index] + '-' + string[index:]
print insert_dash("355879ACB6", 5)
share
|
improve...
How to go to a specific element on page? [duplicate]
...his; // for chaining...
}
})(jQuery);
Then you could just say $('#div_element2').goTo(); to scroll to <div id="div_element2">. Options handling and configurability is left as an exercise for the reader.
share
...
Get individual query parameters from Uri [duplicate]
...ng:
public static class UriExtensions
{
private static readonly Regex _regex = new Regex(@"[?&](\w[\w.]*)=([^?&]+)");
public static IReadOnlyDictionary<string, string> ParseQueryString(this Uri uri)
{
var match = _regex.Match(uri.PathAndQuery);
var paramat...
cartesian product in pandas
...
Use pd.MultiIndex.from_product as an index in an otherwise empty dataframe, then reset its index, and you're done.
a = [1, 2, 3]
b = ["a", "b", "c"]
index = pd.MultiIndex.from_product([a, b], names = ["a", "b"])
pd.DataFrame(index = index).res...