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Visual Studio 2013 hangs when opening a solution
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I found the following to be the better approach to debugging VS based on MS Connect instructions
Please help to confirm if your captured dump file is a 32-bit dump file. If it is a 64-bit dump file, please use the following step to capture a new dump file.
Start Visual Studio.
Start a...
Javascript: Extend a Function
... javascript extension.
First let us extend javascript function.
function Base(props) {
const _props = props
this.getProps = () => _props
// We can make method private by not binding it to this object.
// Hence it is not exposed when we return this.
const privateMethod = ()...
What is uintptr_t data type
... other than bit arithmetic it's also nice if you want to have semantics based on addresses instead of object counts.
– Alex
Apr 2 '16 at 17:44
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Pandas convert dataframe to array of tuples
...data using pandas and now I want to carry out a batch save back to the database. This requires me to convert the dataframe into an array of tuples, with each tuple corresponding to a "row" of the dataframe.
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How to convert a unix timestamp (seconds since epoch) to Ruby DateTime?
...).
# ~ % ruby -v
# => ruby 2.1.5p273 (2014-11-13 revision 48405) [x86_64-darwin13.0]
irb(main):038:0> Benchmark.measure do
irb(main):039:1* ["1318996912", "1318496912"].each do |s|
irb(main):040:2* DateTime.strptime(s, '%s')
irb(main):041:2> end
irb(main):042:1> end
=> #&l...
How do I replace NA values with zeros in an R dataframe?
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The dplyr hybridized options are now around 30% faster than the Base R subset reassigns. On a 100M datapoint dataframe mutate_all(~replace(., is.na(.), 0)) runs a half a second faster than the base R d[is.na(d)] <- 0 option. What one wants to avoid specifically is using an ifelse() or ...
MySQL skip first 10 results
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This is useful and fast to do, for impala and other databases where the limit with offset requires an order argument which is not always desirable.
– KarthikS
Apr 23 '17 at 22:26
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background-size in shorthand background property (CSS3)
... and background-size properties in a shorthanded background property. Based on W3C documentation background-size should come after background-position property separated with an slash( / ).
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get list from pandas dataframe column
...a 1.0 1
b 2.0 2
c 3.0 3
d NaN 4
column types:
one float64
two int64
dtype: object
col_one_list:
[1.0, 2.0, 3.0, nan]
type:<class 'list'>
col_one_arr:
[ 1. 2. 3. nan]
type:<class 'numpy.ndarray'>
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How to generate a range of numbers between two numbers?
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Quick note, cross-database queries like this don't work with SQL Azure
– Kieren Johnstone
Oct 8 '18 at 8:09
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