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HTML: How to limit file upload to be only images?

...t will show all files. So the Javascript part validates whether or not the selected file is an actual image. <div class="col-sm-8 img-upload-section"> <input name="image3" type="file" accept="image/*" id="menu_images"/> <img id="menu_image" class="preview_img" /> &...
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How to loop through all the properties of a class?

... where c.Name.StartsWith("Doc") select c).ToArray(); foreach (PropertyInfo item in properties) { if (item.PropertyType.FullName == "System.String") item.SetValue(this, "", null); } } I used the code ...
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Measure execution time for a Java method [duplicate]

...uld be to run JvisualVM .Just run your method or class and start jvisualVM.Select your java process(if run locally it will list the java process).Go to sampler, monitor CPU, take a snapshot after metod finishes. and you can get time taken by each method in call tree. its buddled in jvm/jdk. ...
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How to ignore HTML element from tabindex?

...Query to do it for you). Disabled prevents the input from being focused or selected at all. share | improve this answer | follow | ...
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How to add line break for UILabel?

...line feed (\n). In Interface Builder's Label attributes, set # Lines = 0. Select the label and then change Lines property to 0 like in the above image, and then use \n in your string for line break. share | ...
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How to call methods dynamically based on their name? [duplicate]

... each with their own advantages and disadvantages. Care should be taken to select the most appropriate method for the situation. The following table breaks down some of the more common techniques: +---------------+-----------------+-----------------+------------+------------+ | Method | A...
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How to install plugins to Sublime Text 2 editor?

...locate the Packages folder by going to the Preferences menu in Sublime and selecting Browse Packages.... – Mark Amery Oct 14 '14 at 22:13 ...
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How to install an apk on the emulator in Android Studio?

... your Emulator from Android Studio Tools->Android-> AVD Manager then select an emulator image and start it. After emulator is started just drag and drop the APK Very simple. share | improve t...
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How do I drop a MongoDB database from the command line?

... Start MongoDB Command for Database drop is : 1. first select the database which you want to delete use < database name > 2. Then use this.. db.dropDatabase() share | ...
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DateTimePicker: pick both date and time

... change Date, then the pop-up calendar can be used whereas in case of Time selection (in the same control you are bound to use up/down keys to change values. For example a custom format " ddddd, MMMM dd, yyyy hh:mm:ss tt " will give you a result like this : "Thursday, August 20, 2009 02:55:23 PM"....