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When should I use nil and NULL in Objective-C?
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You can use nil about anywhere you can use null. The main difference is that you can send messages to nil, so you can use it in some places where null cant work.
In general, just use nil.
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SVG Positioning
I'm having a play with SVG and am having a few problems with positioning. I have a series of shapes which are contained in the g group tag. I was hoping to use it like a container, so I could set its x position and then all the elements in that group would also move. But that doesn't seem to be po...
What to gitignore from the .idea folder?
I started using WebStorm for web development and am not sure what to add and what to exclude from our Git repository. Clearly some files inside the .idea folder are meant to be version controlled like the external library settings ( jsLibraryMappings.xml ) but others will probably change very ofte...
Android. Fragment getActivity() sometimes returns null
In developer console error reports sometimes I see reports with NPE issue. I do not understand what is wrong with my code. On emulator and my device application works good without forcecloses, however some users get NullPointerException in fragment class when the getActivity() method is called.
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After submitting a POST form open a new window showing the result
...ike a form submit shows you how to submit a form that you create via POST in JavaScript. Below is my modified code.
5 Answ...
Insert picture/table in R Markdown [closed]
So I want to insert a table AND a picture into R Markdown. In regular word document I can just easily insert a table (5 rows by 2 columns), and for the picture just copy and paste.
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Strip whitespace from jsp output
...s there a switch I can flip on my web.xml? Is there a Tomcat specific setting?
9 Answers
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More elegant “ps aux | grep -v grep”
When I check list of processes and 'grep' out those that are interesting for me, the grep itself is also included in the results. For example, to list terminals:
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How can I rotate an HTML 90 degrees?
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You need CSS to achieve this, e.g.:
#container_2 {
-webkit-transform: rotate(90deg);
-moz-transform: rotate(90deg);
-o-transform: rotate(90deg);
-ms-transform: rotate(90deg);
transform: rotate(90deg);
}
Demo:
#container_2 {
width: 100px...
Difference between .tagName and .nodeName
... any of the various node types, you can use the nodeName property.
When using nodeName against an element node, you'll get its tag name, so either could really be used, though you'll get better consistency between browsers when using nodeName.
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