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Getting the difference between two repositories
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See http://git.or.cz/gitwiki/GitTips, section "How to compare two local repositories" in "General".
In short you are using GIT_ALTERNATE_OBJECT_DIRECTORIES environment variable to have access to object database of the other re...
Rails: update_attribute vs update_attributes
...d to Rails 4) update_attribute, update, update_column, update_columns etc. http://www.davidverhasselt.com/set-attributes-in-activerecord/. For example it differs in aspects such as running validations, touching object's updated_at or triggering callbacks.
As an answer to the OP's question update_at...
Center image using text-align center?
...<div style="border: 1px solid black;">
<img class="center" src ="https://cdn.sstatic.net/Sites/stackoverflow/company/img/logos/so/so-icon.png?v=c78bd457575a">
</div>
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How to communicate between iframe and the parent site?
...is library supports HTML5 postMessage and legacy browsers with resize+hash https://github.com/ternarylabs/porthole
Edit: Now in 2014, IE6/7 usage is quite low, IE8 and above all support postMessage so I now suggest to just use that.
https://developer.mozilla.org/en-US/docs/Web/API/Window.postMessa...
Android Spinner : Avoid onItemSelected calls during initialization
...y with a boolean to determine if the user is interacting with the device.
http://developer.android.com/reference/android/app/Activity.html#onUserInteraction()
@Override
public void onUserInteraction() {
super.onUserInteraction();
userIsInteracting = true;
}
As a field on the Activity I...
How to select option in drop down protractorjs e2e tests
...l, it also covers verifying the text of the selected option in a dropdown: http://technpol.wordpress.com/2013/12/01/protractor-and-dropdowns-validation/
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Proper MIME media type for PDF files
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Not the answer you're looking for? Browse other questions tagged pdf http-headers content-type mime or ask your own question.
How to check if the URL contains a given string?
...d href property and check indexOf instead of contains
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function() {
if (window.location.href.indexOf("franky") > -1) {
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How to go to a specific element on page? [duplicate]
...is even works in an IFrame on an iPhone.
Example of using getElementById:
http://www.w3schools.com/jsref/tryit.asp?filename=tryjsref_document_getelementbyid
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Log to the base 2 in python
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http://en.wikipedia.org/wiki/Binary_logarithm
def lg(x, tol=1e-13):
res = 0.0
# Integer part
while x<1:
res -= 1
x *= 2
while x>=2:
res += 1
x /= 2
# Fractional part
fp = 1.0
while fp>...