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How does type Dynamic work and how to use it?
... - the concrete implementation is filled-in by the compiler. As for Scalas String Interpolation feature there are well defined rules describing the generated implementation. In fact, one can implement four different methods:
selectDynamic - allows to write field accessors: foo.bar
updateDynamic - ...
List directory in Go
...log"
"os"
"path/filepath"
)
func main() {
var (
root string
files []string
err error
)
root := "/home/manigandan/golang/samples"
// filepath.Walk
files, err = FilePathWalkDir(root)
if err != nil {
panic(err)
}
// ioutil.Rea...
How are booleans formatted in Strings in Python?
...
You may also use the Formatter class of string
print "{0} {1}".format(True, False);
print "{0:} {1:}".format(True, False);
print "{0:d} {1:d}".format(True, False);
print "{0:f} {1:f}".format(True, False);
print "{0:e} {1:e}".format(True, False);
These are the re...
PL/SQL, how to escape single quote in a string?
In the Oracle PL/SQL, how to escape single quote in a string ? I tried this way, it doesn't work.
4 Answers
...
What specific productivity gains do Vim/Emacs provide over GUI text editors?
...not doing everything through the keyboard, creating macros will require an extra set of commands rather than making use of the ones you already are using.
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What is Dependency Injection and Inversion of Control in Spring Framework?
...Consider a class Employee
class Employee {
private int id;
private String name;
private Address address;
Employee() {
id = 10;
name="name";
address = new Address();
}
}
and consider class Address
class Address {
private String street;
private String city;
...
When should I use a List vs a LinkedList
...hin a list, it offers constant time. List<T> offers linear time, as extra items in the list must be shuffled around after the insertion/removal.
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Load image from url
...nd of your activity:
private class DownloadImageTask extends AsyncTask<String, Void, Bitmap> {
ImageView bmImage;
public DownloadImageTask(ImageView bmImage) {
this.bmImage = bmImage;
}
protected Bitmap doInBackground(String... urls) {
String urldisplay = urls[0];
...
Zero-pad digits in string
... data type. You presumably want to pad your digits with leading zeros in a string. The following code does that:
$s = sprintf('%02d', $digit);
For more information, refer to the documentation of sprintf.
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sql “LIKE” equivalent in django query
..._contains or __icontains (case-insensitive):
result = table.objects.filter(string__contains='pattern')
The SQL equivalent is
SELECT ... WHERE string LIKE '%pattern%';
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