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Catch a thread's exception in the caller thread in Python
...think of right now to communicate this information to the parent thread is by using some sort of message passing, so you might look into that.
Try this on for size:
import sys
import threading
import Queue
class ExcThread(threading.Thread):
def __init__(self, bucket):
threading.Thre...
LINQ to Entities only supports casting EDM primitive or enumeration types with IEntity interface
...
I was able to resolve this by adding the class generic type constraint to the extension method. I'm not sure why it works, though.
public static T GetById<T>(this IQueryable<T> collection, Guid id)
where T : class, IEntity
{
//...
...
How do I print a double value without scientific notation using Java?
...ic notations if double is less than 10^-3 or greater than or equal to 10^7
By using %f, the default decimal precision is 6, otherwise you can hardcode it, but it results in extra zeros added if you have fewer decimals. Example:
double myValue = 0.00000021d;
String.format("%.12f", myvalue); // Outpu...
When should one use final for method parameters and local variables?
...bsess over:
Final fields - Marking fields as final forces them to be set by end of construction, making that field reference immutable. This allows safe publication of fields and can avoid the need for synchronization on later reads. (Note that for an object reference, only the field reference i...
Python JSON serialize a Decimal object
...ps(Decimal('3.9'), use_decimal=True)
'3.9'
Note that use_decimal is True by default:
def dumps(obj, skipkeys=False, ensure_ascii=True, check_circular=True,
allow_nan=True, cls=None, indent=None, separators=None,
encoding='utf-8', default=None, use_decimal=True,
namedtuple_as_object=Tr...
Including Google Web Fonts link or import?
...
Use the <link> provided by Google because there is versioning on the font, but right above it use HTML5's preconnect feature to ask the browsers to open a TCP connection and negotiate SSL in advance with fonts.gstatic.com. Here's an example, which o...
Clojure: reduce vs. apply
...wn. A good example of the latter scenario occuring in practice is provided by str: it uses a StringBuilder internally and will benefit significantly from the use of apply rather than reduce.
So, I'd say use apply when in doubt; and if you happen to know that it's not buying you anything over reduce...
How do I use the new computeIfAbsent function?
...ould serve as another illustration on how to use the method.
We can start by defining a map and putting the values in it for the base cases, namely, fibonnaci(0) and fibonacci(1):
private static Map<Integer,Long> memo = new HashMap<>();
static {
memo.put(0,0L); //fibonacci(0)
mem...
Optional Parameters with C++ Macros
...mpty first argument (comma) is important. ##__VA_ARGS__ if it’s preceded by a comma–it removes the comma if ##__VA_ARGS__ expands to nothing. You can see it in the "Becomes..." example as the first (no arguments) line has only 6 parameters but the rest get 7. This trick ensures that the no argum...
Are typedef and #define the same in c?
...
what do you mean by find and replace nature of #define ? , Thank you
– Mohamed El Shenawy
Jun 7 '15 at 22:21
1
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