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How to erase the file contents of text file in Python?
...ion given the new direction of the question?
– Seanny123
May 1 '19 at 18:39
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Clicking the back button twice to exit an activity
...otlin Activity:
private var doubleBackToExitPressedOnce = false
override fun onBackPressed() {
if (doubleBackToExitPressedOnce) {
super.onBackPressed()
return
}
this.doubleBackToExitPressedOnce = true
Toast.makeText(this, "Please click BACK ...
What does @: (at symbol colon) mean in a Makefile?
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Don't make fun of my typing, you'll be old someday too.
– Charlie Martin
Dec 22 '11 at 23:46
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What's the difference between dynamic (C# 4) and var?
...ic types in C# - only consuming them), so this isn't unrealistic... oh the fun we could have ;-p
– Marc Gravell♦
Jun 7 '09 at 19:42
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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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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 ...
How do I update each dependency in package.json to the latest version?
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If you happen to be using Visual Studio Code as your IDE, this is a fun little extension to make updating package.json a one click process.
Version Lens
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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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