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How can I quickly delete a line in VIM starting at the cursor position?
... more about the black hole register and registers in general for extra VIM fun!
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Simple regular expression for a decimal with a precision of 2
...e
deci_num_checker = re.compile(r"""^[0-9]+(\.[0-9]{1,2})?$""")
valid = ["123.12", "2", "56754", "92929292929292.12", "0.21", "3.1"]
invalid = ["12.1232", "2.23332", "e666.76"]
assert len([deci_num_checker.match(x) != None for x in valid]) == len(valid)
assert [deci_num_checker.match(x) == None fo...
How to change or add theme to Android Studio?
...
123
//you need to go to the File-> settings
in that choose IDE settings-> Appearance in tha...
How to show multiline text in a table cell
...er each line (see below) and it works for me.
George Benson </br>
123 Main Street </br>
New York, Ny 12344 </br>
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How do I negate a condition in PowerShell?
...n't exist!"
}
You can also use !: if (!(Test-Path C:\Code)){}
Just for fun, you could also use bitwise exclusive or, though it's not the most readable/understandable method.
if ((test-path C:\code) -bxor 1) {write "it doesn't exist!"}
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Remove duplicated rows
...for larger data sets
library(microbenchmark)
library(data.table)
set.seed(123)
DF <- as.data.frame(matrix(sample(1e8, 1e5, replace = TRUE), ncol = 10))
DT <- copy(DF)
setDT(DT)
microbenchmark(unique(DF), unique(DT))
# Unit: microseconds
# expr min lq mean median ...
Why does Java's hashCode() in String use 31 as a multiplier?
...rved as a bad example for many programmers when writing their own hashCode functions.
– Hans-Peter Störr
May 12 '10 at 7:42
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Rotation methods deprecated, equivalent of 'didRotateFromInterfaceOrientation'?
... share me the method you have used. Thank you
– ask123
Jun 23 '14 at 7:44
2
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How to Batch Rename Files in a macOS Terminal?
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You can use a regex as well. rename 's/123/onetwothree/g' *
– Bryan
Aug 10 '16 at 17:52
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Installing multiple instances of the same windows service on a server
... application and everything is going great. The client has come up with a fun configuration request that requires two instances of this service running on the same server and configured to point at separate databases.
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