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How do I create a unique constraint that also allows nulls?
I want to have a unique constraint on a column which I am going to populate with GUIDs. However, my data contains null values for this columns. How do I create the constraint that allows multiple null values?
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How to use Morgan logger?
I cannot log with Morgan. It doesn't log info to console. The documentation doesn't tell how to use it.
10 Answers
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Unable to open project… cannot be opened because the project file cannot be parsed
I have been working for a while to create an iPhone app. Today when my battery was low, I was working and constantly saving my source files then the power went out...
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How to design RESTful search/filtering? [closed]
I'm currently designing and implementing a RESTful API in PHP. However, I have been unsuccessful implementing my initial design.
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How to configure multi-module Maven + Sonar + JaCoCo to give merged coverage report?
I've searched up and down the internet for this one. There's lots of half-answers out there, to do with Maven properties such as ${sonar.jacoco.reportPath} , or org.jacoco:jacoco-maven-plugin:prepare-agent or setting maven-surefire-plugin argLine with -javaagent .
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How to replace all dots in a string using JavaScript
I want to replace all the occurrences of a dot( . ) in a JavaScript string
15 Answers
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Best way to test if a row exists in a MySQL table
I'm trying to find out if a row exists in a table. Using MySQL, is it better to do a query like this:
12 Answers
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Difference between Dictionary and Hashtable [duplicate]
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Simply, Dictionary<TKey,TValue> is a generic type, allowing:
static typing (and compile-time verification)
use without boxing
If you are .NET 2.0 or above, you should prefer Dictionary<TKey,TValue> (and the other generic collections)
A subtle but important difference is...
Easiest way to check for an index or a key in an array?
Using:
7 Answers
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Can you explain the concept of streams?
...representation of a sequence of bytes. Each stream provides means for reading and writing bytes to its given backing store. But what is the point of the stream? Why isn't the backing store itself what we interact with?
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