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Regular expression to match a dot
... test.this content, then split is not what you need. split will split your string around the test.this. For example:
>>> re.split(r"\b\w+\.\w+@", s)
['blah blah blah ', 'gmail.com blah blah']
You can use re.findall:
>>> re.findall(r'\w+[.]\w+(?=@)', s) # look ahead
['test.t...
No startswith,endswith functions in Go?
...
The strings package contains HasPrefix and HasSuffix.
import "strings"
startsWith := strings.HasPrefix("prefix", "pre") // true
endsWith := strings.HasSuffix("suffix", "fix") // true
play.golang.org
...
Set a default font for whole iOS app?
... let fontAttribute = fontDescriptor.fontAttributes[.nsctFontUIUsage] as? String else {
self.init(myCoder: aDecoder)
return
}
var fontName = ""
switch fontAttribute {
case "CTFontRegularUsage":
fontName = AppFontName.regula...
How to append text to an existing file in Java?
...You can use fileWriter with a flag set to true , for appending.
try
{
String filename= "MyFile.txt";
FileWriter fw = new FileWriter(filename,true); //the true will append the new data
fw.write("add a line\n");//appends the string to the file
fw.close();
}
catch(IOException ioe)
{
...
Using Rails serialize to save hash to database
...
The column type is wrong. You should use Text instead of String. Therefore, your migration should be:
def self.up
add_column :users, :multi_wrong, :text
end
Then Rails will properly convert it into YAML for you (and perform proper serialization). Strings fields are limited ...
Ruby: How to turn a hash into HTTP parameters?
...was originally due to the way an earlier version of rails parsed the query string (I seemed to recall it overwriting the previous 'b' values). Started GET "/?a=a&b%5B%5D=c&b%5B%5D=d&b%5B%5D=e" for 127.0.0.1 at 2011-03-10 11:19:40 -0600 Processing by SitesController#index as HT...
Convert date to another timezone in JavaScript
...
var aestTime = new Date().toLocaleString("en-US", {timeZone: "Australia/Brisbane"});
console.log('AEST time: '+ (new Date(aestTime)).toISOString())
var asiaTime = new Date().toLocaleString("en-US", {timeZone: "Asia/Shanghai"});
console.log('Asia time: '+...
How do I change the text of a span element using JavaScript?
... then setting innerHTML might be acceptable:
// * Fine for hardcoded text strings like this one or strings you otherwise
// control.
// * Not OK for user-supplied input or strings you don't control unless
// you know what you are doing and have sanitized the string first.
document.getElementBy...
How to use enum values in f:selectItem(s)
...mitted"),
REJECTED("Rejected"),
APPROVED("Approved");
private String label;
private Status(String label) {
this.label = label;
}
public String getLabel() {
return label;
}
}
with
<f:selectItems value="#{data.statuses}" var="status"
itemValue=...
Why do some C# lambda expressions compile to static methods?
...ikely because there are no closures, for example:
int age = 25;
Action<string> withClosure = s => Console.WriteLine("My name is {0} and I am {1} years old", s, age);
Action<string> withoutClosure = s => Console.WriteLine("My name is {0}", s);
Console.WriteLine(withClosure.Method.I...