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Handling specific errors in JavaScript (think exceptions)
... In Javascript you can throw whatever you want, be it a simple string, a number (think error code) or a fully qualified object. Sweet!
– Abraham Brookes
Jan 10 '19 at 0:24
...
String concatenation in MySQL
...ame FROM test.student
As @eggyal pointed out in comments, you can enable string concatenation with the || operator in MySQL by setting the PIPES_AS_CONCAT SQL mode.
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Python __str__ and lists
In Java, if I call List.toString(), it will automatically call the toString() method on each object inside the List. For example, if my list contains objects o1, o2, and o3, list.toString() would look something like this:
...
Custom Adapter for List View
... class MyCustomAdapter extends BaseAdapter {
private ArrayList<String> mData = new ArrayList<String>();
private LayoutInflater mInflater;
public MyCustomAdapter() {
mInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
...
Print PHP Call Stack
... (quoting the manual) :
array(2) {
[0]=>
array(4) {
["file"] => string(10) "/tmp/a.php"
["line"] => int(10)
["function"] => string(6) "a_test"
["args"]=>
array(1) {
[0] => &string(6) "friend"
}
}
[1]=>
array(4) {
["file"] => string(10) "...
What's the best way to store a group of constants that my program uses? [closed]
I have various constants that my program uses... string 's, int 's, double 's, etc... What is the best way to store them? I don't think I want an Enum , because the data is not all the same type, and I want to manually set each value. Should I just store them all in an empty class? Or is there a ...
How do I get python's pprint to return a string instead of printing?
... the documentation:
Return the formatted representation of object as a string. indent,
width and depth will be passed to the PrettyPrinter constructor as
formatting parameters.
Example:
>>> import pprint
>>> people = [
... {"first": "Brian", "last": "Kernighan"},
.....
Java List.contains(Object with field value equal to x)
... this:
public boolean containsName(final List<MyObject> list, final String name){
return list.stream().filter(o -> o.getName().equals(name)).findFirst().isPresent();
}
Or alternatively, you could try something like this:
public boolean containsName(final List<MyObject> list, f...
How can I detect the encoding/codepage of a text file
...se remember one extremely important fact. It does not make sense to have a string without knowing what encoding it uses. You can no longer stick your head in the sand and pretend that "plain" text is ASCII.
There Ain't No Such Thing As Plain Text.
If you have a string, in memory, in a file, o...
Reverse of JSON.stringify?
I'm stringyfing an object like {'foo': 'bar'}
8 Answers
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