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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" />
&...
pandas GroupBy columns with NaN (missing) values
...s far result in potentially dangerous behavior as it is quite possible you select a dummy value that is actually part of the dataset. This is increasingly likely as you create groups with many attributes. Simply put, the approach doesn't always generalize well.
A less hacky solve is to use pd.drop_...
Assign an initial value to radio button as checked
...s associated with the radio buttons. To have one of these radio buttons preselected, assign the $scope variable associated with the group to the desired input's value:
$scope.mValue="second"
This makes the "second" radio button selected on loading the page.
...
Make JQuery UI Dialog automatically grow or shrink to fit its contents
I have a JQuery UI dialog popup that displays a form. By selecting certain options on the form new options will appear in the form causing it to grow taller. This can lead to a scenario where the main page has a scrollbar and the JQuery UI dialog has a scrollbar. This two-scrollbar scenario is un...
Why is === faster than == in PHP?
...
I believe this should have been the selected answer. It doesn't merely rationalise with assumptions, the assumptions were more ore less tested empirically.
– Pedro Amaral Couto
Mar 31 '18 at 17:56
...
Copy to clipboard in Node.js?
...ss').exec;
var getClipboard = function(func) {
exec('/usr/bin/xclip -o -selection clipboard', function(err, stdout, stderr) {
if (err || stderr) return func(err || new Error(stderr));
func(null, stdout);
});
};
getClipboard(function(err, text) {
if (err) throw err;
console.log(text...
'System.Net.Http.HttpContent' does not contain a definition for 'ReadAsAsync' and no extension metho
...Api.Client in MyMVCProjectNameAndNotMyConsoleProjectName'. The next time I selected my Console project and typed the same thing in the package manager console. It said MyMVCProjectName already references Microsoft.AspNet.WebApi.Client. I am confused.
– Water Cooler v2
...
Rails Model, View, Controller, and Helper: what goes where?
...rols the view but not the logic. The Controller should concern itself with selecting the proper view and delegate more complex stuff to the domain model (Model) or the business layer.
Domain Driven Design has a concept of Services which is a place you stick logic which needs to orchestrate a number...
Importance of varchar length in MySQL table
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Anytime your select query uses a temporary table (group and order by operations, among other things) it will convert varchar(200) to a char(200) and performance will suffer.
– Jamie
Feb 7 '13 at 20:1...
Remove file from SVN repository without deleting local copy
...om the folder (xxx.java)
Right click and commit, then a window will open.
Select the file you deleted (xxx.java) from the folder, and again right click and delete.. it will remove the file from SVN.
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