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Decimal number regular expression, where digit after decimal is optional
...pace & comments in regular expression)
For example, it will match:
123
23.45
34.
.45
-123
-273.15
-42.
-.45
+516
+9.8
+2.
+.5
And will reject these non-numbers:
. (single decimal point)
-. (negative decimal point)
+. (plus decimal point)
(empty string)
The simpler solutions can incorre...
Oracle 11.2.0.4 RAC FOR redhat 6.4 - 数据库(内核) - 清泛网 - 专注C/C++及内核技术
...这个字体
创建自己的字体文件夹
mkdir -p /usr/share/fonts/zh_CN/TrueType
或者使用XFTP 上传到该目录下
cp zysong.ttf /usr/share/fonts/zh_CN/TrueType/
执行下面三条命令
mkfontscale
mkfontdir
fc-cache -fv
OK 显示正常
然后...
Async Procedures 拓展：异步任务拓展，异步处理耗时任务 - App Inventor 2...
...r(--secondary)]Capture[color=var(--secondary-high)]420×200 7.07 KB
https://community.kodular.io/t/f ... res-extension/21322
高级异步拓展：Enhanced Asynchronous Task Extension
https://community.kodular.io/t/f ... sk-extension/253314
Remove substring from the string
...
ruby is fun! really enjoy seeing stuff like: asdf['bar'] = ''
– Peter Butkovic
Dec 2 '14 at 10:11
...
What is meaning of boolean value returned from an event-handling method in Android
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
Block Comments in Clojure
...re!"))
Check me out!
)
Just wrap your comments in (comment ..) :)
Have fun!
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Function to clear the console in R and RStudio
I am wondering if there is a function to clear the console in R and, in particular, RStudio I am looking for a function that I can type into the console, and not a keyboard shortcut.
...
Google Maps V3 - How to calculate the zoom level for a given bounds
... longitude, and then take the smaller (further out) of the two.
Here is a function that uses both latitude and longitude:
function getBoundsZoomLevel(bounds, mapDim) {
var WORLD_DIM = { height: 256, width: 256 };
var ZOOM_MAX = 21;
function latRad(lat) {
var sin = Math.sin(lat...
How did I get a value larger than 8 bits in size from an 8-bit integer?
...th c = c - 1 and the values remained within the range [-128 ... 127]:
c: -123
c: -124
c: -125
c: -126
c: -127
c: -128 // about to overflow
c: 127 // woop
c: 126
c: 125
c: 124
c: 123
c: 122
Freaky ey? I don't know much about what the compiler does to expressions like i++ or i--. It's likely promo...
Java HTTPS client certificate authentication
I'm fairly new to HTTPS/SSL/TLS and I'm a bit confused over what exactly the clients are supposed to present when authenticating with certificates.
...