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What special characters must be escaped in regular expressions?
...x Flavors (PCRE)
Includes C, C++, Delphi, EditPad, Java, JavaScript, Perl, PHP (preg), PostgreSQL, PowerGREP, PowerShell, Python, REALbasic, Real Studio, Ruby, TCL, VB.Net, VBScript, wxWidgets, XML Schema, Xojo, XRegExp.PCRE compatibility may vary
Anywhere: . ^ $ * + - ? ( ) [ ] { } \ |
Leg...
Adding a simple UIAlertView
... handler:nil]; //You can use a block here to handle a press on this button
[alertController addAction:actionOk];
[self presentViewController:alertController animated:YES completion:nil];
Swift 3 / 4 / 5:
let alertController = UIAlertController(title: "T...
Explaining Python's '__enter__' and '__exit__'
...e which needs some 'cleandown' code executed (think of it as a try-finally block). Some more explanation here.
A useful example could be a database connection object (which then automagically closes the connection once the corresponding 'with'-statement goes out of scope):
class DatabaseConnection...
Can Objective-C switch on NSString?
...
You could set up a dictionary of blocks, like this:
NSString *lookup = @"Hearts"; // The value you want to switch on
typedef void (^CaseBlock)();
// Squint and this looks like a proper switch!
NSDictionary *d = @{
@"Diamonds":
^{
NSLog(@...
Difference between the Apache HTTP Server and Apache Tomcat? [closed]
...r. A servlet, at the end, is a Java class. JSP files (which are similar to PHP, and older ASP files) are generated into Java code (HttpServlet), which is then compiled to .class files by the server and executed by the Java virtual machine.
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Is there a built-in function to print all the current properties and values of an object?
So what I'm looking for here is something like PHP's print_r function.
25 Answers
25...
Change default text in input type=“file”?
... Bin</title>
</head>
<body>
<button style="display:block;width:120px; height:30px;" onclick="document.getElementById('getFile').click()">Your text here</button>
<input type='file' id="getFile" style="display:none">
</body>
</html>
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Origin null is not allowed by Access-Control-Allow-Origin
...t to a server from a local html file and found a solution using Chrome and PHP. (no Jquery)
Javascripts:
var x = new XMLHttpRequest();
if(x) x.onreadystatechange=function(){
if (x.readyState === 4 && x.status===200){
console.log(x.responseText); //Success
}else{
...
Security of REST authentication schemes
...so recommend having a look at these excellent resources .. owasp.org/index.php/Web_Service_Security_Cheat_Sheet and owasp.org/index.php/REST_Security_Cheat_Sheet (DRAFT)
– dodgy_coder
Nov 19 '12 at 2:16
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Test if executable exists in Python?
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example usage: from distutils import spawn php_path = spawn.find_executable("php")
– codefreak
Dec 3 '13 at 17:17
6
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