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Bulk insert with SQLAlchemy ORM
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You also need s.commit() to actually save the records (it took me a bit to figure this one out).
– horcle_buzz
Dec 4 '15 at 1:30
3
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Spring MVC: How to perform validation?
...notations). I did this on a former project, it worked like a charm, quick & easy.
Warning : you must not mistake validation handling for exception handling. Read this post to know when to use them.
References :
A very interesting blog post about bean validation (Original link is dead)
Anothe...
Get the index of the nth occurrence of a string?
...urence)
{
int i = 1;
int index = 0;
while (i <= occurence && (index = s.IndexOf(match, index + 1)) != -1)
{
if (i == occurence)
return index;
i++;
}
return -1;
}
or in C# with extension methods
public static int IndexOfOccurence(th...
Set a persistent environment variable from cmd.exe
...to set variables that persist after the cmd window has been closed.
For example, to set an env var "foo" with value of "bar":
setx foo bar
Though it's worth reading the 'notes' that are displayed if you print the usage (setx /?), in particular:
2) On a local system, variables created or modi...
How to implement an ordered, default dict? [duplicate]
...deredDict() and defaultdict() from collections in one object, which shall be an ordered, default dict .
Is this possible?
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Received fatal alert: handshake_failure through SSLHandshakeException
... server's certificate is probably not trusted by the client. This would usually result in a more verbose error, but it is quite possible. Usually the fix is to import the server's CA certificate into the client's trust store.
The cerificate is issued for a different domain. Again, this would have re...
Pandas groupby: How to get a union of strings
I have a dataframe like this:
8 Answers
8
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How to discard all changes made to a branch?
...e. design ) and I've made a number of changes, but I need to discard them all and reset it to match the repository version. I thought git checkout design would do it, but it just tells me I'm already in branch design and that I have 3 modified files.
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Convert between UIImage and Base64 string
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Swift
First we need to have image's NSData
//Use image name from bundle to create NSData
let image : UIImage = UIImage(named:"imageNameHere")!
//Now use image to create into NSData format
let imageData:NSData = UIImagePNGReprese...
Use of #pragma in C
...take some action, override some default, etc. that may or may not apply to all machines and operating systems.
See msdn for more info.
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