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Preview an image before it is uploaded
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Please take a look at the sample code below:
function readURL(input) {
if (input.files && input.files[0]) {
var reader = new FileReader();
reader.onload = function(e) {
$('#blah').attr('src', e.target.result);
}
reader.readAsData...
JSR-303 @Valid annotation not working for list of child objects
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I didn't even read your answer but just looking at setters and getters solved my issue.
– Shubham Khandare
Jul 10 at 7:11
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Non-static method requires a target
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Just reading the first sentence is enough to solve the problem
– Antoine Pelletier
Oct 3 '18 at 17:15
add...
How to remove a key from a Python dictionary?
...tion if the key does not exist. You might find one or the other easier to read, which is fine. Both are idiomatic Python, so choose whatever you prefer. But claiming that this answer is more complex or inefficient simply makes no sense.
– Sven Marnach
Jun 15...
How can I change an element's text without changing its child elements?
...t node and how to replace all text nodes.
This approach makes it easier to read the code and easier to use it multiple times and with different purposes.
The Update 2017 (adrach) should still work as well if you prefer that.
As jQuery extension
//Add a jQuery extension so it can be used on any j...
Bash script - variable content as a command to run
...g
Note that even though "Some arg" was passed as a single argument, eval read it as two.
Instead, you can just use the string as the command itself:
# The regular bash eval works by jamming all its arguments into a string then
# evaluating the string. This function treats its arguments as indivi...
“No newline at end of file” compiler warning
...nd with a non-escaped newline was removed in C++11. The specification now reads:
A source file that is not empty and that does not end in a new-line character, or that ends in a new-line character immediately preceded by a backslash character before any such splicing takes place, shall be proce...
SQL update fields of one table from fields of another one
... text
) INHERITS (A);
This avoids the need to update B.
But be sure to read all the details.
Otherwise, what you ask for is not considered a good practice - dynamic stuff such as views with SELECT * ... are discouraged (as such slight convenience might break more things than help things), and w...
UITableView + Add content offset at top
...t sure that's what you want.
If you need a permanent offset and are not already using section headers, then you could create the offset similarly to above by making custom views for the section headers, especially if you just have one section, this could give you the look of a permanent offset.
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How can I sort a List alphabetically?
...ases. If you use a List, and insert values very often, and the list may be read between those insertions, then you have to sort the list after every insertion. The set does the same, but does it much faster.
Using the right collection for the right task is a key to write short and bug free code. I...