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How can I create a unique constraint on my column (SQL Server 2008 R2)?
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To create these constraints through the GUI you need the "indexes and keys" dialogue not the check constraints one.
But in your case you just need to run the piece of code you already have. It doesn't need to be entered into the expression dialogu...
JavaScript string encryption and decryption?
I'm interested in building a small app for personal use that will encrypt and decrypt information on the client side using JavaScript. The encrypted information will be stored in a database on a server, but never the decrypted version.
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Creating an empty Pandas DataFrame, then filling it?
...pandas DataFrame docs here: http://pandas.pydata.org/pandas-docs/stable/dsintro.html
5 Answers
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proper hibernate annotation for byte[]
...pes, wrappers
of the primitive types,
java.lang.String,
java.math.BigInteger,
java.math.BigDecimal,
java.util.Date,
java.util.Calendar, java.sql.Date,
java.sql.Time, java.sql.Timestamp,
byte[], Byte[], char[], Character[], enums, and any other
type that implements Serializable.
A...
Scalar vs. primitive data type - are they the same thing?
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I don't think they're interchangeable. They are frequently similar, but the difference does exist, and seems to mainly be in what they are contrasted with and what is relevant in context.
Scalars are typically contrasted with compounds, such as ...
How exactly does the python any() function work?
... would get this comprehended list: [False, False, True, False, True]. This internal value would then get passed to the any function, which would return True, since there is at least one True value.
But with generator expressions, Python no longer has to create that internal list of True(s) and Fals...
Importing a Swift protocol in Objective-C class
I try to import a Swift Protocol named AnalyticProtocol into an Objective-C class named AnalyticFactory .
5 Answers
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When should I use perror(“…”) and fprintf(stderr, “…”)?
...difference between - or better, when I should use - perror("...") or fprintf(stderr, "...") .
5 Answers
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Declaring an enum within a class
...nition then you'll need to explicitly specify Car::Color in the function's interface.
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How to sort with lambda in Python
..., ('apple','10','200'), ('baby','20','300')]
lst.sort(key=lambda x:x[1])
print(lst)
It will print as following:
[('apple', '10', '200'), ('baby', '20', '300'), ('candy', '30', '100')]
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