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What do I have to do to get Core Data to automatically migrate models?
I have read the documentation about automatic /lightweight migration for Core Data models - but I am having problems implementing it.
...
Convert a Unicode string to a string in Python (containing extra symbols)
...This raw string of bytes can be written to a file. However, note that when reading it back, you must know what encoding it is in and decode it using that same encoding.
When writing to files, you can get rid of this manual encode/decode process by using the codecs module. So, to open a file that en...
What's the best way to check if a file exists in C?
...st
}
You can also use R_OK, W_OK, and X_OK in place of F_OK to check for read permission, write permission, and execute permission (respectively) rather than existence, and you can OR any of them together (i.e. check for both read and write permission using R_OK|W_OK)
Update: Note that on Windows...
What does FETCH_HEAD in Git mean?
...Consider also, still with Git 2.29 (Q4 2020), the FETCH_HEAD is now always read from the filesystem regardless of the ref backend in use, as its format is much richer than the normal refs, and written directly by "git fetch"(man) as a plain file..
See commit e811530, commit 5085aef, commit 4877c6c, ...
How to send a JSON object over Request with Android?
...TP Client. Here's a code sample on how to do it. You should create a new thread for network activities so as not to lock up the UI thread.
protected void sendJson(final String email, final String pwd) {
Thread t = new Thread() {
public void run() {
Looper.pr...
Why are Subjects not recommended in .NET Reactive Extensions?
..., how do we publish it?
I would imagine that you would want a dedicated thread for polling. You wouldn't want some other coder hammering the ThreadPool/TaskPool and leaving you in a ThreadPool starvation situation. Alternatively you don't want the hassle of context switching (I guess). So assume we...
What is the correct way to check for string equality in JavaScript?
...oach.
For insight into this, and other "good vs. bad" parts of Javascript read up on Mr. Douglas Crockford and his work. There's a great Google Tech Talk where he summarizes lots of good info: http://www.youtube.com/watch?v=hQVTIJBZook
Update:
The You Don't Know JS series by Kyle Simpson is ex...
How do I adb pull ALL files of a folder present in SD Card
...x:
adb shell find "/sdcard/Folder1" -iname "*.jpg" | tr -d '\015' | while read line; do adb pull "$line"; done;
Here is an explanation:
adb shell find "/sdcard/Folder1" - use the find command, use the top folder
-iname "*.jpg" - filter the output to only *.jpg files
| ...
Unix tail equivalent command in Windows Powershell
..., not tail -f and an efficient implementation as well. Since this one also reads the complete file before returning the last lines this is painful for the file sizes they expect.
– Joey
Dec 13 '10 at 9:26
...
How to solve error “Missing `secret_key_base` for 'production' environment” (Rails 4.1)
...und out that Rails 4.1 changed the way to manage the secret_key, so if you read the secrets.yml file located at exampleRailsProject/config/secrets.yml you'll find something like this:
# Do not keep production secrets in the repository,
# instead read values from the environment.
production:
secre...