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What's the difference between [ and [[ in Bash? [duplicate]
...tespace more intuitively. For example, with [ you have to write
if [ -f "$file" ]
to correctly handle empty strings or file names with spaces in them. With [[ the quotes are unnecessary:
if [[ -f $file ]]
Because it is a syntactical feature, it lets you use && and || operators for boole...
How to define a preprocessor symbol in Xcode
...204.png
If you have multiple targets or projects that use the same prefix file, use Preprocessor Macros Not Used In Precompiled Headers instead, so differences in your macro definition don't trigger an unnecessary extra set of precompiled headers.
...
Set a persistent environment variable from cmd.exe
... Ok, so considering your solution, I have created a registry (.reg) file containing the environment variables I want to add/change. I'll then run this file on all the target PCs. I don't really need to send a windows message, as I will just restart the application that will be impacted. Thank...
How to add a custom button state
... to report here the whole solution, with some more details:
First, create file "res/values/attrs.xml":
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="food">
<attr name="state_fried" format="boolean" />
<attr name="state_ba...
How to open multiple pull requests on GitHub
...you create a PR from work-1 to master.
Your code can be reviewed by seeing files changed from PR.
Now, for further work you will checkout from branch work-1 into new branch work-2
You make some commits in branch work-2 as work-2-commit-1 and work-2-commit-2
Now you create a PR from work-2 to work...
pandas: How do I split text in a column into multiple rows?
I'm working with a large csv file and the next to last column has a string of text that I want to split by a specific delimiter. I was wondering if there is a simple way to do this using pandas or python?
...
git switch branch without discarding local changes
..., great! Just
commit. If not (error: Your local changes to the following files would be overwritten ...), you still have lots of options.
The easiest is probably git stash (as all the other answer-ers
that beat me to clicking post said). Run git stash save or git stash push,1 or just plain git s...
How to exit git log or git diff [duplicate]
...
Add following alias in the .bashrc file
git --no-pager log --oneline -n 10
--no-pager will encounter the (END) word
-n 10 will show only the last 10 commits
--oneline will show the commit message, ignore the author, date information
...
git: updates were rejected because the remote contains work that you do not have locally
...pens when we are trying to push to remote repository but has created a new file on remote which has not been pulled yet, let say Readme. In that case as the error says
git rejects the update
as we have not taken updated remote in our local environment.
So Take pull first from remote
git pull...
Convert string in base64 to image and save on filesystem in Python
...rmat, which represents PNG image. Is there a way to save this image to the filesystem, as a PNG file?
8 Answers
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