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Unix command to prepend text to a file
... Note that '\n' only works for GNU sed, not BSD (such as OSX, FreeBSD, etc.). To be more portable with those, see: stackoverflow.com/questions/1421478/…
– jwd
Jun 27 '17 at 23:19
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How to read a text file into a list or an array with Python
... e.g., a file containing the alphabetic characters 3 by row (a,b,c, d,e,f, etc) and apply the procedure described above what you get is a list like this: ['a', 'b', 'c\nd', 'e', ... ] (note the item 'c\nd'). I'd like to add that, the above problem notwistanding, this procedure collapses data from i...
jQuery Popup Bubble/Tooltip [closed]
...need to have all manners of HTML and styling including hyperlinks, images, etc.
13 Answers
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DataTrigger where value is NOT null?
... equality.
This blog post describes how to do comparisons such as LT, GT, etc in a DataTrigger.
This limitation of the DataTrigger can be worked around to some extent by using a Converter to massage the data into a special value you can then compare against, as suggested in Robert Macnee's answer....
Difference between null and empty (“”) Java String
...u can convert it to lower case, look up the index of some character in it, etc. The null string null is "no string at all." It doesn't have a length because it's not a string at all. Trying to apply any standard string operation to the null string will cause a NullPointerException at runtime.
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Exit single-user mode
...aced with an error message that the given database is in single user mode, etc.
– youcantryreachingme
Apr 10 '19 at 3:42
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How to Apply Gradient to background view of iOS Swift App
...en you add a sublayer it may sit over all your other items, labels, image, etc. To overcome this create another view that sits below everything and set its constraints to that of the container you want the gradient in. Then set the gradient to be applied to this view. Subviews will then be inserted ...
Function to convert column number to letter?
... Another reason to use this code is if you're not in VBA but in VB, .net, etc.
– Maury Markowitz
Dec 13 '17 at 16:19
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Validating email addresses using jQuery and regex
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It will not validate äüõ etc letters!!
– D.A.H
Aug 17 '14 at 17:16
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PHP function to get the subdomain of a URL
... That works for everything that has a single 'word' TLD like net, com, biz etc. However when dealing with co.uk, for example, it does not. As seen here This is actually a harder problem to solve.
– Mike Lewis
Mar 13 '11 at 23:12
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