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Handling very large numbers in Python
I've been considering fast poker hand evaluation in Python. It occurred to me that one way to speed the process up would be to represent all the card faces and suits as prime numbers and multiply them together to represent the hands. To whit:
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How do you query for “is not null” in Mongo?
...rue}});
This will return all documents with both a key called "IMAGE URL" and a non-null value.
db.mycollection.find({"IMAGE URL":{$ne:null}});
Also, according to the docs, $exists currently can't use an index, but $ne can.
Edit: Adding some examples due to interest in this answer
Given these inse...
Specifying an Index (Non-Unique Key) Using JPA
...il because there are literally millions of queries on this field per day, and its a bit slow without the key.
11 Answers
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Comparing Dates in Oracle SQL
...C, doesn't necessarily mean December. It depends on your NLS_DATE_LANGUAGE and NLS_DATE_FORMAT settings. To ensure that your comparison with work in any locale you can use the datetime format model MM instead
The year '95 is inexact. You know you mean 1995, but what if it was '50, is that 1950 or 2...
“using namespace” in c++ headers
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and how should we streamline the template functions--which are supposed to be in the headers? typedefs?
– Chris
Mar 11 '18 at 11:43
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c# open file with default application and parameters
...t or Reader, you can't open the file in the specified page.
On the other hand, if you are Ok with specifying Acrobat or Reader, keep reading:
You can do it without telling the full Acrobat path, like this:
Process myProcess = new Process();
myProcess.StartInfo.FileName = "acroRd32.exe"; //n...
What is the best open-source java charting library? (other than jfreechart) [closed]
...he only successful opensource project in this area seems to be jfreechart, and it doesn't even have any documentation or examples available.
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Under what circumstances is an SqlConnection automatically enlisted in an ambient TransactionScope T
...onnection to be "enlisted" in a transaction? Does it simply mean that commands I execute on the connection will participate in the transaction?
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Java lib or app to convert CSV to XML file? [closed]
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Maybe this might help: JSefa
You can read CSV file with this tool and serialize it to XML.
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Change the selected value of a drop-down list with jQuery
...s:
[jQuery.val] checks, or selects, all the radio buttons, checkboxes, and select options that match the set of values.
This behavior is in jQuery versions 1.2 and above.
You most likely want this:
$("._statusDDL").val('2');
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