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How to remove non-alphanumeric characters?
...'hello-world'); // helloworld
preg_replace('/[^\p{L}\p{N} ]+/', '', 'abc@~#123-+=öäå'); // abc123öäå
preg_replace('/[^\p{L}\p{N} ]+/', '', '你好世界!@£$%^&*()'); // 你好世界
Note: This is a very old, but still relevant question. I am answering purely to provide supplementary i...
In JavaScript, does it make a difference if I call a function with parentheses?
...not using ()'s
Lets take this function for example:
function foo(){
return 123;
}
if you log "foo" - without ()
console.log(foo);
---outout------
function foo(){
return 123;
}
Using no () means to fetch the function itself. You would do this if you want it to be passed along as a callback.
if ...
If statement in aspx page
...erver">
<% If Request.QueryString("id_query_param") = 123 Then 'Add some VB comment here,
'which will not be visible in the rendered source code of the aspx page later %>
<!-- add some html content depending on -->
<!-- the conditi...
Replace multiple characters in one replace call
... double click/cscript/wscript: var chars = {a:'1', b:'2', c:'3'}; var s = '123abc123'; var u = s.replace(/[abc]/g, function(m) { return chars[m]; }); WScript.echo(u);
– Dmitry
Jun 15 '18 at 20:52
...
How can I use a batch file to write to a text file?
...d in D:\Temp\WriteText.bat
@echo off
echo This is a test> test.txt
echo 123>> test.txt
echo 245.67>> test.txt
Output:
D:\Temp>WriteText
D:\Temp>type test.txt
This is a test
123
245.67
D:\Temp>
Notes:
@echo off turns off printing of each command to the console
Unless...
Where to put Gradle configuration (i.e. credentials) that should not be committed?
...
~/.gradle/gradle.properties:
mavenUser=admin
mavenPassword=admin123
build.gradle:
...
authentication(userName: mavenUser, password: mavenPassword)
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...
How to force R to use a specified factor level as reference in a regression?
...
See the relevel() function. Here is an example:
set.seed(123)
x <- rnorm(100)
DF <- data.frame(x = x,
y = 4 + (1.5*x) + rnorm(100, sd = 2),
b = gl(5, 20))
head(DF)
str(DF)
m1 <- lm(y ~ x + b, data = DF)
summary(m1)
Now alter the factor ...
“Variable” variables in Javascript?
... try using eval():
var data = "testVariable";
eval("var temp_" + data + "=123;");
alert(temp_testVariable);
Or using the window object:
var data = "testVariable";
window["temp_" + data] = 123;
alert(window["temp_" + data]);
http://www.hiteshagrawal.com/javascript/dynamic-variables-in-javascrip...
TypeError: ObjectId('') is not JSON serializable
...
123
You should define you own JSONEncoder and using it:
import json
from bson import ObjectId
cl...
What is middleware exactly?
...answered Jul 22 '16 at 22:53
SAK123SAK123
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