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How to change height of grouped UITableView header?
...bleView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
if section == 0 {
return CGFloat.leastNormalMagnitude
}
return tableView.sectionHeaderHeight
}
Swift:
func tableView(tableView: UITableView, heightForHeaderInSection se...
How to check if bootstrap modal is open, so i can use jquery validate
...ootstrap 4
($("element").data('bs.modal') || {}).isShown // Bootstrap <= 3
as discussed in Twitter Bootstrap Modal - IsShown.
When the modal is not yet opened, .data('bs.modal') returns undefined, hence the || {} - which will make isShown the (falsy) value undefined. If you're into strictn...
App Inventor 2 串口调试 App 全方案技术调研 - App应用开发 - 清泛IT社区，为创新赋能！
...调试 App 完全可行，而且选择丰富：
- 要快速出成果 -> 用蓝牙 BluetoothClient + HC-05，1天搞定
- 要有线直连 -> 用内置 Serial 组件 + USB OTG，开箱即用
- 要专业功能 -> 自研 UsbSerial 扩展，功能最强
- 要连工业设备 -> TCP 网...
Automatic counter in Ruby for each?
...wombat).each_with_index {|item, index|
hash[item] = index
}
hash #=> {"cat"=>0, "wombat"=>2, "dog"=>1}
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Unable to load Private Key. (PEM routines:PEM_read_bio:no start line:pem_lib.c:648:Expecting: ANY PR
...
use below command to remove illegal characters:
# tail -c +4 server.key > new_server.key
The new_server.key should be correct.
For more detail, you can click here, thanks for the post.
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How do I create a new class in IntelliJ without using the mouse?
..., so I made my own keybinding for it. You can do this by opening Settings > IDE Settings > Keymap and navigating to Main menu > File > New... (I would recommend typing "new" into the search box - that will narrow it down considerably).
Then you can add a new keyboard shortcut for it by ...
Generate fixed length Strings filled with whitespaces
...ng padString(String str, int leng) {
for (int i = str.length(); i <= leng; i++)
str += " ";
return str;
}
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How to insert an item into an array at a specific index (JavaScript)?
... use it like:
var arr = [ 'A', 'B', 'D', 'E' ];
arr.insert(2, 'C');
// => arr == [ 'A', 'B', 'C', 'D', 'E' ]
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What does `m_` variable prefix mean?
...
I prefer just using "this->" - kinda makes "m_" redundant and is even better as it's enforced by the compiler (in theory you can pop "m_" on any variable type; can't do that with "this->"). Part of me wishes that C++ would just standardize on ma...
How to get whole and decimal part of a number?
...akdown($number, $returnUnsigned = false)
{
$negative = 1;
if ($number < 0)
{
$negative = -1;
$number *= -1;
}
if ($returnUnsigned){
return array(
floor($number),
($number - floor($number))
);
}
return array(
floor($number) * $negative,
($number ...