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Counting array elements in Python [duplicate]
... the number of elements in an array, because contrary to logic array.count(string) does not count all the elements in the array, it just searches for the number of occurrences of string.
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What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?
...ast fails.
This doesn't happen with 41224d776a326fb40f000001 because that string is a valid ObjectId.
One way to resolve this is to add a check prior to your findById call to see if id is a valid ObjectId or not like so:
if (id.match(/^[0-9a-fA-F]{24}$/)) {
// Yes, it's a valid ObjectId, procee...
Entity Framework VS LINQ to SQL VS ADO.NET with stored procedures? [closed]
... the M:M comment, however. The schemas I've worked with almost always grow extra attributes on join tables. This induces a structural change to the object model, requiring a lot of code rework. I would much rather deal with the intermediate relation explicitly from the outset.
–...
What is the difference between “text” and new String(“text”)?
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new String("text");
explicitly creates a new and referentially distinct instance of a String object; String s = "text"; may reuse an instance from the string constant pool if one is available.
You very rarely would ever want to ...
How do I update a GitHub forked repository?
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@JohnY Using GitHub will always create an extra commit. You need to do all this in a shell on a local repo to avoid that extra commit.
– Jonathan Cross
Oct 14 '16 at 21:51
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SQLite in Android How to update a specific row
...new ContentValues();
cv.put("Field1","Bob"); //These Fields should be your String values of actual column names
cv.put("Field2","19");
cv.put("Field2","Male");
Then use the update method, it should work now:
myDB.update(TableName, cv, "_id="+id, null);
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Unable to find a locale path to store translations for file __init__.py
I'm trying to translate a Django app. I created some strings with {% trans %} in my templates. However, when I execute the following command in my app folder, I receive an error message:
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Django optional url parameters
...3 occurring. The URL paragraph will be MUCH harder to read than a single string with multiple optional parameters. Using symbolic constants for the optional parameter substrings would make it very easy to read, and there would be just one URL.
– Bogatyr
Sep...
Hidden features of Windows batch files
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I was looking for this last week! (couldn't remember the character)
– chilltemp
Nov 11 '08 at 22:14
21
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What are the details of “Objective-C Literals” mentioned in the Xcode 4.4 release notes?
...Array, NSDictionary, and NSNumber (just like one can create literals for NSString)
NSArray Literals
Previously:
array = [NSArray arrayWithObjects:a, b, c, nil];
Now:
array = @[ a, b, c ];
NSDictionary Literals
Previously:
dict = [NSDictionary dictionaryWithObjects:@[o1, o2, o3]
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