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The command rbenv install is missing
In Ubuntu 10.04 I just installed rbenv .
The install command is not present.
8 Answers
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Comparing date part only without comparing time in JavaScript
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I'm still learning JavaScript, and the only way that I've found which works for me to compare two dates without the time is to use the setHours method of the Date object and set the hours, minutes, seconds and milliseconds to zero. Then compare the two dat...
Proper use of beginBackgroundTaskWithExpirationHandler
I'm a bit confused about how and when to use beginBackgroundTaskWithExpirationHandler .
5 Answers
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What does if __name__ == “__main__”: do?
... file, it does two things:
it sets a few special variables like __name__, and then
it executes all of the code found in the file.
Let's see how this works and how it relates to your question about the __name__ checks we always see in Python scripts.
Code Sample
Let's use a slightly different cod...
Django - how to create a file and save it to a model's FileField?
Here's my model. What I want to do is generate a new file and overwrite the existing one whenever a model instance is saved:
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What is the EAFP principle in Python?
...mmon Python coding style assumes the existence of valid keys or attributes and catches exceptions if the assumption proves false. This clean and fast style is characterized by the presence of many try and except statements. The technique contrasts with the LBYL style common to many other languages s...
App Inventor 2 上传文件和图片到服务器教程 · App Inventor 2 中文网
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const fs = require('node:fs');
const path = require('node:path');
const {randomUUID} = require('node:crypto');
const app = express();
const dir = path.resolve(process.env.UPLOAD_DIR || path.join(__dirname, 'uploads'));
fs.mkdirSync(dir, {recursive: true});
const form = multer({limits: {fileSize: 20...
Alarm Manager Example
... until the phone turns off.
Add to Manifest.xml:
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<uses-permission android:name="android.permission.WAKE_LOCK"></uses-permission>
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<receiver android:process=":remote" android:name=".Alarm"></receiver>
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Code in your class:
package yourPackage;
import android.app....
Why is char[] preferred over String for passwords?
...method. Similarly, I have come across a suggestion not to use String to handle passwords.
17 Answers
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Is it smart to replace boost::thread and boost::mutex with c++11 equivalents?
... is that my genius project manager thinks that boost is another dependency and that it is horrible because "you depend on it"(I tried explaining the quality of boost, then gave up after some time :( ). Smaller reason why I would like to do it is that I would like to learn c++11 features, because peo...