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MySQL, update multiple tables with one query
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Take the case of two tables, Books and Orders. In case, we increase the number of books in a particular order with Order.ID = 1002 in Orders table then we also need to reduce that the total number of books available in our stock by the same number in Books tab...
git returns http error 407 from proxy after CONNECT
... is something similar to what rohitmohta is proposing ; in regular DOS command prompt (not on git bash) :
first
git config --global http.proxy http://username:password@proxiURL:proxiPort
and in some cases also
git config --global https.proxy http://username:password@proxiURL:proxiPort
then
g...
How do you query for “is not null” in Mongo?
...rue}});
This will return all documents with both a key called "IMAGE URL" and a non-null value.
db.mycollection.find({"IMAGE URL":{$ne:null}});
Also, according to the docs, $exists currently can't use an index, but $ne can.
Edit: Adding some examples due to interest in this answer
Given these inse...
Is it possible to “decompile” a Windows .exe? Or at least view the Assembly?
A friend of mine downloaded some malware from Facebook, and I'm curious to see what it does without infecting myself. I know that you can't really decompile an .exe, but can I at least view it in Assembly or attach a debugger?
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What's the point of the X-Requested-With header?
JQuery and other frameworks add the following header:
3 Answers
3
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ModelState.IsValid == false, why?
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About "can it be that 0 errors and IsValid == false": here's MVC source code from https://github.com/Microsoft/referencesource/blob/master/System.Web/ModelBinding/ModelStateDictionary.cs#L37-L41
public bool IsValid {
get {
return Values.All(mo...
pandas dataframe columns scaling with sklearn
I have a pandas dataframe with mixed type columns, and I'd like to apply sklearn's min_max_scaler to some of the columns. Ideally, I'd like to do these transformations in place, but haven't figured out a way to do that yet. I've written the following code that works:
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Rails 3.1 and Image Assets
... public folder should not have much in it anymore, mostly just error pages and a favicon.
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Hudson or Teamcity for continuous integration? [closed]
We are a Java shop looking for a CI tool to use.
Both Hudson and Teamcity seem to be free but Teamcity seems slicker and with more support.
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What is causing “Unable to allocate memory for pool” in PHP?
...like Wordpress, but never encountered "Unable to allocate memory for pool" and having trouble tracking down any information.
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