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“Diff” an image using ImageMagick
... as a PNG file, the second one as a PDF.
The resulting diff file displays all pixels which are different in red color. The ones which are unchanged appear white.
Short and sweet.
Note, your images need not be the same type. You can even mix JPEG, TIFF, PNG -- under one condition: the images sho...
T-SQL: Using a CASE in an UPDATE statement to update certain columns depending on a condition
I am wondering if this is possible at all. I want to update column x if a condition is true, otherwise column y would be updated
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How to join (merge) data frames (inner, outer, left, right)
...nner join: merge(df1, df2) will work for these examples because R automatically joins the frames by common variable names, but you would most likely want to specify merge(df1, df2, by = "CustomerId") to make sure that you were matching on only the fields you desired. You can also use the by.x and b...
How to get the HTML for a DOM element in javascript
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Now that it's 2013, calling "domnode.outerHTML" works on all major browsers (FF since v11)
– Kevin
Oct 31 '13 at 17:23
ad...
Fluid or fixed grid system, in responsive design, based on Twitter Bootstrap
...idth and fluid width you need to think in terms of your ENTIRE page. Generally, you want to pick one or the other, but not both. The examples you listed in your question are, in-fact, in the same fixed-width page. In other words, the Scaffolding page is using a fixed-width layout. The fixed grid ...
“var” or no “var” in JavaScript's “for-in” loop?
...erties, so using the standard "for in" loop w/o the var statement will actually fail and return a ReferenceError.
– dkugappi
Jun 11 '13 at 15:01
2
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How to Convert Boolean to String
...at the type of the return value is; it may be boolean or something else. (Calling a function someone else wrote during debugging.) Your solution converts $res to boolean, whereas var_export can handle all possible types.
– user2443147
Jun 15 '14 at 18:47
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How to set time delay in javascript
...setInterval (other)
Both these methods have same signature. They take a call back function and delay time as parameter.
setTimeout executes only once after the delay whereas setInterval keeps on calling the callback function after every delay milisecs.
both these methods returns an integer ident...
Favorite (G)Vim plugins/scripts? [closed]
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Nerdtree
The NERD tree allows you to explore your filesystem and to open files and
directories. It presents the filesystem to you in the form of a tree which you
manipulate with the keyboard and/or mouse. It also allows you to perform
simple filesy...
bash string equality [duplicate]
...le, I assume). See here, for example.
You could double-check just to be really sure or just for your interest by looking at the bash source code, should be somewhere in the parsing code there, but I couldn't find it straightaway.
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