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How to ignore whitespace in a regular expression subject string?
Is there a simple way to ignore the white space in a target string when searching for matches using a regular expression pattern? For example, if my search is for "cats", I would want "c ats" or "ca ts" to match. I can't strip out the whitespace beforehand because I need to find the begin and en...
jQuery get the image src
I hope when I click the button, I can get the specific img src and show the img src in the div class img-block block.
5 A...
Changing .prop using jQuery does not trigger .change event
...en the value is changed by users interaction on page and not when value is modified using code.
Here you need to use .change() or .trigger("change") after changing the property:
$('input[type="checkbox"][name="something"]').prop("checked", false).change();
Working Demo
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HashMap get/put complexity
We are used to saying that HashMap get/put operations are O(1). However it depends on the hash implementation. The default object hash is actually the internal address in the JVM heap. Are we sure it is good enough to claim that the get/put are O(1) ?
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Reading header data in Ruby on Rails
I am making an API where in the access token for Facebook login will be sent in through header data.
3 Answers
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C++0x lambda capture by value always const?
Is there any way to capture by value, and make the captured value non-const? I have a library functor that I would like to capture & call a method that is non-const but should be.
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Why does ~True result in -2?
...ue) is 1.
1 is:
00000001
and ~1 is:
11111110
Which is -2 in Two's complement1
1 Flip all the bits, add 1 to the resulting number and interpret the result as a binary representation of the magnitude and add a negative sign (since the number begins with 1):
11111110 → 00000001 → 00000010 ...
Run JavaScript when an element loses focus
I have a standard HTML input that I want to run JavaScript code when it loses focus. Sadly my Google searches did not reveal how to do this.
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Default value for field in Django model
Suppose I have a model:
3 Answers
3
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How to move columns in a MySQL table?
Currently I am having the following MySQL table: Employees (empID, empName, department);
4 Answers
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