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How can I make Bootstrap columns all the same height?
...ap 4
Bootstrap 4 uses Flexbox so there is no need for extra CSS.
Demo
<div class="container">
<div class="row ">
<div class="col-md-4" style="background-color: red">
some content
</div>
<div class="col-md-4" style="background-color...
How to use Jackson to deserialise an array of objects
...ss[] myObjects = mapper.readValue(json, MyClass[].class);
As List:
List<MyClass> myObjects = mapper.readValue(jsonInput, new TypeReference<List<MyClass>>(){});
Another way to specify the List type:
List<MyClass> myObjects = mapper.readValue(jsonInput, mapper.getTypeFact...
ASP.NET Repeater bind List
I am binding a List<string> to a Repeater control. Now I want to use the Eval function
to display the contents in ItemTemplate like
...
How to sort an IEnumerable
How can I sort an IEnumerable<string> alphabetically. Is this possible?
4 Answers
...
Saving enum from select in Rails 4.1
...lection => Wine.colors.keys.to_a
Which generated the following HTML:
<select id="wine_color" name="wine[color]">
<option value=""></option>
<option value="red">red</option>
<option value="white">white</option>
<option value="sparkling">spa...
Using only CSS, show div on hover over
I would like to show a div when someone hovers over an <a> element, but I would like to do this in CSS and not JavaScript. Do you know how this can be achieved?
...
Database Design for Revisions?
... tool that will read the system data dictionary for a table and generate a script that creates the shadow table and a set of triggers to populate it.
Don't try to use XML for this, XML storage is a lot less efficient than the native database table storage that this type of trigger uses.
...
Detect changes in the DOM
...n events are deprecated in the DOM3 Events spec and have a performance penalty.
You can try to emulate mutation event with onpropertychange in IE (and fall back to the brute-force approach if non of them is available).
For a full domChange an interval could be an over-kill. Imagine that you need t...
Simultaneously merge multiple data.frames in a list
...
Another question asked specifically how to perform multiple left joins using dplyr in R . The question was marked as a duplicate of this one so I answer here, using the 3 sample data frames below:
x <- data.frame(i = c("a","b","c"), j = 1:3, stringsAsFactors=FALSE)
y <- ...
Image Greyscale with CSS & re-color on mouse-over?
...mples below.
Pure CSS (using only one colored image)
img.grayscale {
filter: url("data:image/svg+xml;utf8,<svg xmlns=\'http://www.w3.org/2000/svg\'><filter id=\'grayscale\'><feColorMatrix type=\'matrix\' values=\'0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.3333 0 0 0.3333 0.3333 0.33...