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Comment out text in R Markdown (Rmd file)
...o the text in the R code chunk, but the general texts, like % in LaTex for example.
3 Answers
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validation custom message for rails 3
... the message by writing a manual validation and adding the error to :base, for example errors.add(:base, "Story title is required)
– Marco Prins
Nov 9 '15 at 14:45
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Sort array of objects by object fields
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For sort desc, -1 * strcmp($a->name, $b->name);
– Wallace Maxters
Jul 14 '15 at 13:59
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problem with and :after with CSS in WebKit
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I was looking for the same thing since the background of my select is the same as the arrow color. As previously mentioned, it is impossible yet to add anything using :before or :after on a select element. My solution was to create a wrapp...
Extract first item of each sublist
...lst = [['a','b','c'], [1,2,3], ['x','y','z']]
>>> lst2 = [item[0] for item in lst]
>>> lst2
['a', 1, 'x']
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NameError: name 'self' is not defined
...ther.
It's a common pattern to default an argument to None and add a test for that in code:
def p(self, b=None):
if b is None:
b = self.a
print b
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How should I store GUID in MySQL tables?
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My DBA asked me when I asked about the best way to store GUIDs for my objects why I needed to store 16 bytes when I could do the same thing in 4 bytes with an Integer. Since he put that challenge out there to me I thought now was a good time to mention it. That being said...
You can sto...
Add Text on Image using PIL
...ation that loads an Image and when the user clicks it, a text area appears for this Image (using jquery ), where user can write some text on the Image. Which should be added on Image.
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How to fully remove Xcode 4
...ormally, [xcode-path] means /Developer, but if you have multiple versions, for example 3 is the first installed, 4 is second, /Developer will be xcode 3's root derectory and /Xcode4 for xcode 4.
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SQL Server Regular expressions in T-SQL
...expression library written in T-SQL (no CLR, no extended SP , pure T-SQL) for SQL Server, and that should work with shared hosting?
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