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Get the current displaying UIViewController on the screen in AppDelegate.m
...
You can use the rootViewController also when your controller is not a UINavigationController:
UIViewController *vc = self.window.rootViewController;
Once you know the root view controller, then it depends on how you have built your UI, bu...
Eclipse secure storage
...Indigo installed the folder org.eclipse.equinox.security is hidden in the /root/.eclipse folder.
Do a
sudo su
cd /root/.eclipse
mv org.eclipse.equinox.security org.eclipse.equinox.security.backup
Then (re)start eclipse and the password will be gone.
...
Pass ruby script file to rails console
...
Here's the hack I'm using:
rr() {
rails_root="$(bundle exec rails runner "puts Rails.root")"
rp="$(relpath "$1" "$rails_root")"
bundle exec rails runner "eval(File.read '$rp')"
}
relpath() {python -c "import os.path; print os.path.relpath('$1','${2:-$PWD}')...
App Inventor 2 连接方式：AI伴侣、模拟器、USB · App Inventor 2 中文网
...了三星手机样式，屏幕及分辨率较高。
Q：商业模拟器如何使用？
A：步骤如下：
电脑网页上搜索MuMu，下载最新版模拟器。
启动后，在模拟器设置中设置为手机模式，选择适合自己的分辨率。
帮助菜单 ...
Concurrent HashSet in .NET Framework?
...cky part about making an ISet<T> concurrent is that the set methods (union, intersection, difference) are iterative in nature. At the very least you have to iterate over all n members of one of the sets involved in the operation, while locking both sets.
You lose the advantages of a Concur...
How to import an existing X.509 certificate and private key in Java keystore to use in SSL?
...-out server.p12 -name [some-alias] \
-CAfile ca.crt -caname root
Note: Make sure you put a password on the pkcs12 file - otherwise you'll get a null pointer exception when you try to import it. (In case anyone else had this headache). (Thanks jocull!)
Note 2: You might want to add...
How to convert JSON to XML or XML to JSON?
... doesn't need to perfectly conform to W3C standard, but 1. you must have a root element and 2. you cannot start element names with numbers are two of the enforced XML standards I have found when using Newtonsoft and MS libraries.
In older versions, Blank elements do not convert to JSON. They are ign...
A fast method to round a double to a 32-bit int explained
... but will keep and propagate the sign to the entire 64-bit signed integer. union { double d; int64_t l; } magic; magic.d = input + 6755399441055744.0; magic.l <<= 13; magic.l >>= 13;
– Wojciech Migda
May 13 '16 at...
SecurityException: Permission denied (missing INTERNET permission?)
...things are getting more tricky if you also do not mind your app running on rooted devices too. There're tools available in Google Play your users can install to control permission granted to installed apps at run-time - for example: Permissions Denied and others. This can also be done with CyanogenM...
How to avoid reinstalling packages when building Docker image for Python projects?
...from -r requirements.txt (line 1))
Running setup.py (path:/tmp/pip_build_root/pytest/setup.py) egg_info for package pytest
....
Cleaning up...
---> bf5c154b87c9
Removing intermediate container 08188205e92b
Step 4 : ADD . /srv
---> 3002a3a67e72
Removing intermediate container 83defd1851d0
Ste...