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Does Ruby have a string.startswith(“abc”) built in method?
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Jörg W MittagJörg W Mittag
325k6969 gold badges400400 silver badges603603 bronze badges
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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.t...
Returning a boolean from a Bash function
I want to write a bash function that check if a file has certain properties and returns true or false. Then I can use it in my scripts in the "if". But what should I return?
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Take a char input from the Scanner
I am trying to find a way to take a char input from the keyboard.
22 Answers
22
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How to replace part of string by position?
...Builder.ToString();
An alternative is to use String.Substring, but I think the StringBuilder code gets more readable.
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How do I reset a sequence in Oracle?
In PostgreSQL , I can do something like this:
18 Answers
18
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How can I temporarily disable a foreign key constraint in MySQL?
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Try DISABLE KEYS or
SET FOREIGN_KEY_CHECKS=0;
Make sure to
SET FOREIGN_KEY_CHECKS=1;
after.
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How to get the URL without any parameters in JavaScript?
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lonesomedaylonesomeday
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Checking for the correct number of arguments
How do i check for the correct number of arguments (one argument). If somebody tries to invoke the script without passing in the correct number of arguments, and checking to make sure the command line argument actually exists and is a directory.
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Responsive image align center bootstrap 3
...atalog using Bootstrap 3. When displayed on tablets, the product images look ugly because of their small size (500x500) and a width of 767 pixels in the browser. I want to put the image in the center of the screen, but for some reason I can not. Who be will help solve the problem?
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