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Test if string is a guid without throwing exceptions?
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18 Answers
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Active
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Difference between passing array and array pointer into function in C
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115
First, some standardese:
6.7.5.3 Function declarators (including prototypes)
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7 A declara...
C/C++ macro string concatenation
Is it possible to concatenate have STR3 == "s1"?
You can do this by passing args to another Macro function. But is there a direct way?
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Apache: “AuthType not set!” 500 Error
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183
Remove the line that says
Require all granted
it's only needed on Apache >=2.4
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What's the difference between the four File Results in ASP.NET MVC
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178
FileResult is an abstract base class for all the others.
FileContentResult - you use it when...
Adding a regression line on a ggplot
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178
In general, to provide your own formula you should use arguments x and y that will correspond ...
Where are environment variables stored in registry?
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Here's where they're stored on XP through Server 2012 R2:
User Variables
HKEY_CURRENT_USER\Environment
System Variables
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment
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What is maximum query size for mysql?
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192
You can check your current
server setting with:
SHOW VARIABLES LIKE 'max_allowed_packet';...
MongoDB: update every document on one field
...our example, the <update> is:
{ $set: { lastLookedAt: Date.now() / 1000 } }
However, depending on your version of MongoDB, the query will look different. Regardless of version, the key is that the empty condition {} will match any document. In the Mongo shell, or with any MongoDB client:
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What exactly is Arel in Rails 3.0?
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182
What exactly is Arel in Rails 3.0?
It's an object model for an algebra of relational query o...