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What is the !! (not not) operator in JavaScript?
... As far as I know, this bang-bang pattern is not useful inside a if(…_ statement; only in a return statement of a function that should return a boolean.
– rds
Mar 26 '14 at 19:43
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How to send file contents as body entity using cURL
...ry headers that match what the service is expecting: --header: "<header_name>:<header_value>" as a single string.
– Roy Hinkley
Jul 27 '17 at 18:36
...
How to detect the OS from a Bash script?
I would like to keep my .bashrc and .bash_login files in version control so that I can use them between all the computers I use. The problem is I have some OS specific aliases so I was looking for a way to determine if the script is running on Mac OS X, Linux or Cygwin .
...
filter for complete cases in data.frame using dplyr (case-wise deletion)
... %>% filter(complete.cases(.))
or this:
library(tidyr)
df %>% drop_na
If you want to filter based on one variable's missingness, use a conditional:
df %>% filter(!is.na(x1))
or
df %>% drop_na(x1)
Other answers indicate that of the solutions above na.omit is much slower but tha...
Where is debug.keystore in Android Studio
...to go to your java folder, for me it was at
C:\Program Files\Java\jdk1.8.0_60\bin
and run the following command
keytool -list -v -keystore "%USERPROFILE%\.android\debug.keystore" -alias androiddebugkey -storepass android -keypass android
from the command you can easily see that keystore addre...
UIActivityViewController crashing on iOS 8 iPads
...S8 activityViewController.popoverPresentationController.sourceView = _shareItem; }
– bluebamboo
Oct 26 '14 at 22:01
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Check if an image is loaded (no errors) with jQuery
...lop for, try developing for Internet Explorer 7 or less. Besides adding a $_GET parameter to the image load, will load a new image everytime, like Gromix suggested.
– SSH This
Jan 14 '13 at 23:51
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Hide files with certain extension in Sublime Text Editor?
...pectively:
{
}
Activate the default preferences tab and search for file_exclude_patterns (which is on line 377 in ST3 build 3083) and also folder_exclude_patterns if desired. Copy its contents to your user preferences file, like so:
{
"file_exclude_patterns": ["*.pyc", "*.pyo", "*.exe", "*....
How to access test resources in Scala?
...le methods that Java provides. Given your example of data.xml being in $SBT_PROJECT_HOME/src/test/resources/, you can access it in a test like so:
import scala.io.Source
// The string argument given to getResource is a path relative to
// the resources directory.
val source = Source.fromURL(getCla...
How to show git log history for a sub directory of a git repo?
...to hunt down how and where the folder moved..
– alpha_989
Apr 7 '18 at 21:37
3
^^ Updated to show...