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Converting Long to Date in Java returns 1970
...ime.Instant // Represent a moment as seen in UTC. Internally, a count of nanoseconds since 1970-01-01T00:00Z.
.ofEpochSecond( 1_220_227_200L ) // Pass a count of whole seconds since the same epoch reference of 1970-01-01T00:00Z.
Know Your Data
People use various precisions in...
'uint32_t' identifier not found error
...
On Windows I usually use windows types. To use it you have to include <Windows.h>.
In this case uint32_t is UINT32 or just UINT.
All types definitions are here: http://msdn.microsoft.com/en-us/library/windows/desktop/aa383751%28v=vs....
Is the LIKE operator case-sensitive with MSSQL Server?
...r that is case sensitive, it is the column itself.
When a SQL Server installation is performed a default collation is chosen to the instance. Unless explicitly mentioned otherwise (check the collate clause bellow) when a new database is created it inherits the collation from the instance and when ...
Temporarily put away uncommitted changes in Subversion (a la “git-stash”)
... uncomfortable with this, just check out another copy and work on it in parallel.
– sbi
Oct 12 '09 at 14:28
2
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django admin - add custom form fields that are not part of the model
... ModelForm class and then declare your extra fields inside that as you normally would. I've also given an example of how you might use these values in form.save():
from django import forms
from yourapp.models import YourModel
class YourModelForm(forms.ModelForm):
extra_field = forms.CharFiel...
Difference between 3NF and BCNF in simple terms (must be able to explain to an 8-year old)
...in BCNF because there is no column (either key or non-key) that is functionally dependent on anything besides that key.
Because each pizza must have exactly one of each topping type, we know that (Pizza, Topping Type) is a candidate key. We also know intuitively that a given topping cannot belong ...
invalid target release: 1.7
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You need to set JAVA_HOME to your jdk7 home directory, for example on Microsoft Windows:
"C:\Program Files\Java\jdk1.7.0_40"
or on OS X:
/Library/Java/JavaVirtualMachines/jdk1.7.0_40.jdk/Contents/Home
...
How to do a less than or equal to filter in Django queryset?
I am attempting to filter users by a custom field in each users profile called profile. This field is called level and is an integer between 0-3.
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Why do objects of the same class have access to each other's private data?
...tatic, compile-time feature. I think it is rather obvious that it is not really possible to implement any meaningful per-object access control at compile time. Only per-class control can be implemented that way.
Some hints of per-object control are present in protected access specification, which i...
How can I efficiently download a large file using Go?
... Go that will store the content directly into a file instead of storing it all in memory before writing it to a file? Because the file is so big, storing it all in memory before writing it to a file is going to use up all the memory.
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