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How do I use IValidatableObject?

...ustom model binder): var resultsGroupedByMembers = validationResults .SelectMany(vr => vr.MemberNames .Select(mn => new { MemberName = mn ?? "", Error = vr.ErrorMessage })) .GroupBy(x => x.MemberName); foreach (v...
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Is there a best practice for generating html with javascript

...$.template('<div><img src="${url}" />${name}</div>'); $(selector).append( t , { url: jsonObj.url, name: jsonObj.name }); I say go the cool route (and better performing, more maintainable), and use templating. ...
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filter for complete cases in data.frame using dplyr (case-wise deletion)

...function which lets you specify columns (basically everything which dplyr::select can understand) which should not have any NA values (modeled after pandas df.dropna()): drop_na <- function(data, ...){ if (missing(...)){ f = complete.cases(data) } else { f <- complete....
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Set the maximum character length of a UITextField

..., newValue, .OBJC_ASSOCIATION_RETAIN) addTarget(self, action: #selector(checkMaxLength), for: .editingChanged) } } @objc func checkMaxLength(textField: UITextField) { guard let prospectiveText = self.text, prospectiveText.count > maxLength ...
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Why am I getting tree conflicts in Subversion?

...ecursively (-R), starting from the current directory (.). In TortoiseSVN, selecting "Resolved" on right click, actually resolves this issue. share | improve this answer | fo...
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Access denied for user 'root@localhost' (using password:NO)

...etting of the root user ; mysql> use mysql; Database changed mysql> select * from user; Empty set (0.00 sec) mysql> truncate table user; Query OK, 0 rows affected (0.00 sec) mysql> flush privileges; Query OK, 0 rows affected (0.01 sec) mysql> grant all privileges on *.* to root@loca...
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Replace input type=file by an image

... be updated with the filename or at least a message that the file has been selected successfully. The user has no visual input on what happened after he selected the file. Could this be done please? Perhaps change to a different image, when a file is chosen? – JoaMika ...
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Xcode 4.2 debug doesn't symbolicate stack call

...y setting it at the END of your didFinishLaunchingWithOptions function (or selectively disabling 3rd party libraries). Or better yet, set a symbolic break point on NSSetUncaughtExceptionHandler to quickly see who is calling it. What you may want to do is to modify your current one rather than adding...
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How to install Google Play Services in a Genymotion VM (with no drag and drop support)?

...ges provided by OpenGapps. I tried and this worked: Visit opengapps.org Select x86 as platform Choose the Android version corresponding to your virtual device Select nano as variant Download the zip file Drag & Drop the zip installer in new Genymotion virtual device (2.7.2 and above only) Fol...
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How to clone git repository with specific revision/changeset?

... git repository, aptly, clones the entire repository: there isn't a way to select only one revision to clone. However, once you perform git clone, you can checkout a specific revision by doing checkout <rev>. share ...