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How to test an Internet connection with bash?
...l OK" code
Without wget
#!/bin/bash
echo -e "GET http://google.com HTTP/1.0\n\n" | nc google.com 80 > /dev/null 2>&1
if [ $? -eq 0 ]; then
echo "Online"
else
echo "Offline"
fi
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...
Recursively counting files in a Linux directory
.../1.33 seconds (real/user/sys). rsync --stats --dry-run -ax ~ /xxx took 4.4/3.1/2.1 seconds. That's for about 500,000 files on SSD.
– slim
Animate text change in UILabel
...ce iOS4 it can be obviously done with blocks:
[UIView animateWithDuration:1.0
animations:^{
label.alpha = 0.0f;
label.text = newText;
label.alpha = 1.0f;
}];
...
UITableViewCell subview disappears when cell is selected
...ighted){
self.yourView.backgroundColor = color;
}
}
In Swift 3.1 :
override func setSelected(_ selected: Bool, animated: Bool) {
let color = yourView.backgroundColor
super.setSelected(selected, animated: animated)
if selected {
yourView.backgroundColor = ...
To draw an Underline below the TextView in Android
...line using setPaintFlags()");
using SpannableString
`String content1 = "3.1 Underline using SpannableString";
SpannableString spannableString1 = new SpannableString(content1);
spannableString1.setSpan(new UnderlineSpan(), 0, content1.length(), 0);
textview31.setText(spanna...
WebView and HTML5
...Group.LayoutParams.MATCH_PARENT);
}
custom_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2009 The Android Open Source Project
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License....
ZMQ: 基本原理 - 开源 & Github - 清泛网 - 专注C++内核技术
创APP如搭积木 - 创意无限，梦想即时！ 手机版 手机“扫一扫” var qrcode = new QRCode("qrcode", { text: 'https://m.tsingfun.com/it/opensource/0MQ-The-Theoretical-Foundation.html', //URL地址 width: 180, height: 180, colorDark: '#088CEF'...
What does the servlet value signify
...h higher numbers get
loaded after servlets with lower numbers.
The JSP 3.1 spec (JSR 340) says this on page 14-160:
The element load-on-startup indicates that this servlet should be loaded (instantiated
and have its
init() called) on the startup of the Web application. The element conten...
org.xml.sax.SAXParseException: Content is not allowed in prolog
...be the error there, having data in front of the prolog, -<?xml version="1.0" encoding="UTF-8"?>.
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“Public key certificate and private key doesn't match” when using Godaddy issued certificate [closed
...t Godaddy using the keytool program for direct installation on a Glassfish 3.1 server (Amazon linux ami). I had no problems getting that setup directly on the server. I now need to move the certificate from the web server to the new load balancer. Amazon requires the private key and certs to be i...