大约有 32,294 项符合查询结果（耗时：0.0539秒） [XML]
In Django, how does one filter a QuerySet with dynamic field lookups?
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I'm wondering what it would take to create a custom ModelField/FormField/WidgetField that implemented the behavior to allow the user to, on the GUI side, basically "build" a query, never seeing the actual text, but using an interface to do...
Re-ordering columns in pandas dataframe based on column name [duplicate]
...sorted will be looking for the iterative class magic methods to figure out what to sort. Take a look at this question stackoverflow.com/questions/48868228/…
– Ivelin
Apr 2 at 19:29
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Failed to execute 'btoa' on 'Window': The string to be encoded contains characters outside of the La
...e I posted this question I learned a bit about APIs that are dedicated for what I was doing. If the string you're converting is long, use Blob object to handle the conversion. Blob can handle any binary data.
– Tomáš Zato - Reinstate Monica
Oct 15 '15 at 7:51...
Remove multiple whitespaces
...ch effectively means replace two or more whitespace with a single space.
What you want is replace one or more whitespace with single whitespace, so you can use the pattern \s\s* or \s+ (recommended)
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How to construct a std::string from a std::vector?
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@heLomaN: What's wrong with std::string(v.data(), v.size()), which was explicitly mentioned in the answer for that exact reason?
– Sz.
Aug 13 '19 at 11:50
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How can I list all the deleted files in a Git repository?
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You should also look at the git whatchanged command. It's pretty cool.
– Mr.Black
Mar 19 '15 at 19:30
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Storyboard doesn't contain a view controller with identifier
...eld in the inspector.
Instead, just set the field named "Storyboard ID" to what you would name the Identifier. This field can be found under the "Show the Identity inspector" tab in the inspector.
[Note - comments below indicate that some people have found that they need to (also?) set the field "R...
iOS detect if user is on an iPad
...s to be one adjustment. I need to detect if the current device is an iPad. What code can I use to detect if the user is using an iPad in my UIViewController and then change something accordingly?
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How can I split up a Git commit buried in history?
...-use the original commit message for a certain commit.
If you want to test what you're committing (good idea!) use git stash to hide away the part you haven't committed (or stash --keep-index before you even commit it), test, then git stash pop to return the rest to the work tree. Keep making commit...
How to check file MIME type with javascript before upload?
...E types.
✘ Quick method
You can naïvely ask Blob for the MIME type of whatever file it represents using this pattern:
var blob = files[i]; // See step 1 above
console.log(blob.type);
For images, MIME types come back like the following:
image/jpeg
image/png
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Caveat: The MIME type...