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How do I check if file exists in jQuery or pure JavaScript?
...le you should be binding OnReadyStateChange event before you check the HTTP_STATUS.
– RobertPitt
Sep 5 '10 at 18:36
8
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How to remove padding around buttons in Android?
...s.
<android.support.design.button.MaterialButton
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:insetTop="0dp"
android:insetBottom="0dp"
android:text="@string/view_video"
android:textColor="@color/white"/>
...
Add a space (“ ”) after an element using :after
... opacity of the pseudo-element to be zero, eg:
element:before{
content: "_";
opacity: 0;
}
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How to send a correct authorization header for basic authentication
...
Per https://developer.mozilla.org/en-US/docs/Web/API/WindowBase64/Base64_encoding_and_decoding and http://en.wikipedia.org/wiki/Basic_access_authentication , here is how to do Basic auth with a header instead of putting the username and password in the URL. Note that this still doesn't hide the u...
Comparing Dates in Oracle SQL
...u should transform your string into a date. Either by using the built-in TO_DATE() function, or a date literal.
TO_DATE()
select employee_id
from employee
where employee_date_hired > to_date('31-DEC-95','DD-MON-YY')
This method has a few unnecessary pitfalls
As a_horse_with_no_name noted...
What's the difference between MyISAM and InnoDB? [duplicate]
...e differences between InnoDB and MyISAM. But yes, InnoDB behavior with AUTO_INCREMENT is a difference, and one that we have to account for if we are going to use AUTO_INCREMENT, and if we are dependent on some behavior that isn't supported. This difference could be considered a disadvantage; perhaps...
DataContractSerializer doesn't call my constructor?
... when a DataContractSerializer creates it.
Interlocked.CompareExchange(ref _sync, new object(), null);
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Finding all cycles in a directed graph
...nyone using python for this: the Johnson algorithm is implemented as simple_cycle in networkx.
– Joel
Feb 12 '16 at 21:15
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PostgreSQL naming conventions
...valent convention is:
SQL keywords: UPPER CASE
names (identifiers): lower_case_with_underscores
For example:
UPDATE my_table SET name = 5;
This is not written in stone, but the bit about identifiers in lower case is highly recommended, IMO. Postgresql treats identifiers case insensitively whe...
HTML5 Canvas 100% Width Height of Viewport?
...es the text. You unfortunately have to use JS.
– i336_
May 10 '16 at 1:56
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