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Is SecureRandom thread safe?
Is SecureRandom thread safe? That is, after initializing it, can access to the next random number be relied on to be thread safe? Examining the source code seems to show that it is, and this bug report seems to indicate that its lack of documentation as thread safe is a javadoc issue. Has anyone...
jQuery append() vs appendChild()
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The main difference is that appendChild is a DOM method and append is a jQuery method. The second one uses the first as you can see on jQuery source code
append: function() {
return this.domManip(arguments, true, function( elem ) {
if ( this.nodeType === 1 || this.nod...
XPath OR operator for different nodes
... substrees of a whole XML tree. "//book|//cd" means among all child nodes and descendant of the root node find all ones named 'book' then find also all named 'cd'. If in the descendance of the root node there are only book nodes,your node-set will contain book nodes only. If in the descendance of...
Invalid postback or callback argument. Event validation is enabled using '
...e cost).
Use ASP.NET Ajax UpdatePanel. (Put the listbox in the Updatepanel and trigger a update, if you add or remove listbox. This way viewstate and related fields get updates and eventvalidation will pass.)
Forget client-side and use the classic postback and add or remove the listitems server-side...
Ruby on Rails form_for select field with class
..._class' }) %>
select helper takes two options hashes, one for select, and the second for html options. So all you need is to give default empty options as first param after list of items and then add your class to html_options.
http://api.rubyonrails.org/classes/ActionView/Helpers/FormOptionsH...
vertical alignment of text element in SVG
...but it was off screen, so I used a CSS rule "alignment-baseline: hanging", and it did exactly what I was looking for, text at highest point in the SVG container, without a single pixel being offscreen.
– R. Hill
Apr 12 '13 at 15:06
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Android gradle: buildtoolsVersion vs compileSdkVersion
...ween buildtoolsVersion vs compileSdkVersion in the build.gradle for an Android project?
2 Answers
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Set TextView text from html-formatted string resource in XML
...native that's not documented (I tripped over it after searching for hours, and finally found it in the bug list for the Android SDK itself). You CAN include raw HTML in strings.xml, as long as you wrap it in
<![CDATA[ ...raw html... ]]>
Example:
<string name="nice_html">
<![CDATA...
jQuery equivalent of getting the context of a Canvas
... ensure you don't try calling the canvas element before it's fully created and registered to the DOM.
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Overflow to left instead of right
...e number as the user types it. The text inside the div is aligned to right and incoming characters are added to right as the text grows to left.
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