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How to insert a value that contains an apostrophe (single quote)?
...r can be inserted by calling the CHAR function with the apostrophe's ASCII table lookup value, 39. The string values can then be concatenated together with a concatenate operator.
Insert into Person
(First, Last)
Values
'Joe',
concat('O',char(39),'Brien')
...
Convert a matrix to a 1 dimensional array
...dimensions of the matrix/array.
Elts_int <- as.matrix(tmp_int) # read.table returns a data.frame as Brandon noted
dim(Elts_int) <- (maxrow_int*maxcol_int,1)
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How can I call a custom Django manage.py command directly from a test driver?
...for a Django manage.py command that does a backend operation on a database table. How would I invoke the management command directly from code?
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How to return an empty ActiveRecord relation?
...
A more portable solution that doesn't require an "id" column and doesn't assume there won't be a row with an id of 0:
scope :none, where("1 = 0")
I'm still looking for a more "correct" way.
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String literals and escape characters in postgresql
Attempting to insert an escape character into a table results in a warning.
5 Answers
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Convert data.frame column to a vector?
... of using the '[[' operator is that it works both with data.frame and data.table. So if the function has to be made running for both data.frame and data.table, and you want to extract a column from it as a vector then
data[["column_name"]]
is best.
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Adding parameter to ng-click function inside ng-repeat doesn't seem to work
...g custom html and compile it using angular in the controller.
var tableContent= '<div>Search: <input ng-model="searchText"></div>'
+'<div class="table-heading">'
+ '<div class="table-col">Customer ID&l...
Width equal to content [duplicate]
...elements with "clearfix" div.
Another elegant solution is to use display: table for elements.
With this solution you don't need to insert line breaks manually (like with inline-block), you don't need a wrapper around your elements (like with floats) and you can center your element if you need.
ht...
What is the difference between a HashMap and a TreeMap? [duplicate]
...y works with Comparable objects, HashMap only works with objects with a suitable hashCode() implementation.
– Thilo
Mar 15 '10 at 1:29
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Why doesn't Objective-C support private methods?
... were private; i.e. this could be achieved by adding a private-only method table to the Class structure.
There would be no way for a private
method to short-circuit this check or
skip the runtime?
It couldn't skip the runtime, but the runtime wouldn't necessarily have to do any...