大约有 7,549 项符合查询结果（耗时：0.0363秒） [XML]
How to store a dataframe using Pandas
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@geekazoid In case the data needs to be transformed after loading (i.e. string/object to datetime64) this would need to be done again after loading a saved csv, resulting in performance loss. pickle saves the dataframe in it's current state thus the data and its format ...
How to make an AJAX call without jQuery?
...== 'POST') {
x.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
}
x.send(data)
};
ajax.get = function (url, data, callback, async) {
var query = [];
for (var key in data) {
query.push(encodeURIComponent(key) + '=' + encodeURIComponent(data[key])...
A generic error occurred in GDI+, JPEG Image to MemoryStream
...t to memory stream
using (var m = new MemoryStream())
{
dst.Save(m, format);
var img = Image.FromStream(m);
//TEST
img.Save("C:\\test.jpg");
var bytes = PhotoEditor.ConvertImageToByteArray(img);
return img;
}
It appears that the memory stream that the...
How to test if a string is basically an integer in quotes using Ruby
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You could, but that would be bad form. You don't use exceptions as control flow, and no one's code should ever contain "rescue false" (or "rescue true"). Some simple gsub'ing would make my solution work for edge cases not specified by the OP.
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Generate array of all letters and digits
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for letters or numbers you can form ranges and iterate over them. try this to get a general idea:
("a".."z").each { |letter| p letter }
to get an array out of it, just try the following:
("a".."z").to_a
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Xml configuration versus Annotation based configuration [closed]
...d as transactional with an annotation makes perfect sense, since this is information a programmer would probably wish to know. But that an interface is going to be injected as a SubtypeY instead of a SubtypeX should not be included in the class, because if now you wish to inject SubtypeX, you have ...
ASP.NET MVC - Attaching an entity of type 'MODELNAME' failed because another entity of the same type
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slightly neater and more performant: if (db.As.AsNoTracking().Any(x => x.aID == aID && x.UserID==userID))
– Brent
Jul 8 '14 at 10:40
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How to trigger jQuery change event in code
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The parameterless form of the change() method triggers a change event. You can write something like:
$(document).ready(function() {
$("#yourInitialElementID").change(function() {
// Do something here...
$(".yourDropDownCla...
Multiple Inheritance in C#
... It does have it's caveats, it isn't CLS compliant for example. For more information see this (2004) article blogs.msdn.com/b/csharpfaq/archive/2004/03/07/…
– dvdvorle
Mar 1 '12 at 8:45
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Handling specific errors in JavaScript (think exceptions)
...Ecmascript standard, not even ES6, but they also explain how to make it conform, though it's not as succint. Basically same as above, but using instanceOf. Check here
– Bart
Oct 20 '15 at 8:58
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