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New features in java 7
.../ code
}
Underscores in numeric literals
int one_million = 1_000_000;
Strings in switch
String s = ...
switch(s) {
case "quux":
processQuux(s);
// fall-through
case "foo":
case "bar":
processFooOrBar(s);
break;
case "baz":
processBaz(s);
// fall-through
def...
Using Excel OleDb to get sheet names IN SHEET ORDER
...param name="excelFile">The excel file.</param>
/// <returns>String[]</returns>
private String[] GetExcelSheetNames(string excelFile)
{
OleDbConnection objConn = null;
System.Data.DataTable dt = null;
try
{
// Connection String. Change the excel file to t...
String concatenation does not work in SQLite
...entation:
The || operator is "concatenate" - it joins together the two strings of its operands.
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Setting default value for TypeScript object passed as argument
...ks in TypeScript 1.5:
function sayName({ first, last = 'Smith' }: {first: string; last?: string }): void {
const name = first + ' ' + last;
console.log(name);
}
sayName({ first: 'Bob' });
The trick is to first put in brackets what keys you want to pick from the argument object, with key=valu...
Android- create JSON Array and JSON Object
...entsObj = new JSONObject();
studentsObj.put("Students", jsonArray);
String jsonStr = studentsObj.toString();
System.out.println("jsonString: "+jsonStr);
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Do I need quotes for strings in YAML?
... of a Rails project. I am a little confused though, as in some files I see strings in double-quotes and in some without. A few points to consider:
...
How to extract numbers from a string in Python?
I would extract all the numbers contained in a string. Which is the better suited for the purpose, regular expressions or the isdigit() method?
...
Most lightweight way to create a random string and a random hexadecimal number
What is the most lightweight way to create a random string of 30 characters like the following?
13 Answers
...
Java equivalent of C#'s verbatim strings with @
Quick question. Is there an equivalent of @ as applied to strings in Java:
4 Answers
4...
Pandas groupby: How to get a union of strings
...
In [4]: df = read_csv(StringIO(data),sep='\s+')
In [5]: df
Out[5]:
A B C
0 1 0.749065 This
1 2 0.301084 is
2 3 0.463468 a
3 4 0.643961 random
4 1 0.866521 string
5 2 0.120737 !
In [6]: df.dtype...