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How update the _id of one MongoDB Document?
I want update an _id field of one document. I know it's not a really good pratice. But with some technical reason, I need update it. If I try to update it I get:
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What exactly is Python's file.flush() doing?
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There's typically two levels of buffering involved:
Internal buffers
Operating system buffers
The internal buffers are buffers created by the runtime/library/language that you're programming against and is meant to speed things up by ...
What is the difference between pip and conda?
...now pip is a package manager for python packages. However, I saw the installation on IPython's website use conda to install IPython.
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Eclipse error “ADB server didn't ACK, failed to start daemon”
...in, restart eclipse then solved that problem.
For those using OS X
killall adb
For those using Windows
adb kill-server
should do the trick.
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How do I convert a Django QuerySet into list of dicts?
...;> Blog.objects.values()
[{'id': 1, 'name': 'Beatles Blog', 'tagline': 'All the latest Beatles news.'}],
>>> Blog.objects.values('id', 'name')
[{'id': 1, 'name': 'Beatles Blog'}]
Note: the result is a QuerySet which mostly behaves like a list, but isn't actually an instance of list. Us...
ios simulator: how to close an app
When you "run" the simulator from xCode, the app automatically launches, and then you can click the home button to suspend the app. What I want to do is close the app from within the simulator. So, how can this be done?
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Why would adding a method add an ambiguous call, if it wouldn't be involved in the ambiguity
...comparisons of the three remaining candidates. There are three such pairs. All of them have identical parameter lists once we strip off the omitted optional parameters, which means that we have to go to the advanced tiebreaking round described in section 7.5.3.2 of the specification.
Which is bette...
How do I change the IntelliJ IDEA default JDK?
...I want IntelliJ IDEA to reflect changes of JAVA_HOME sys variable automatically.
– Ivan_Bereziuk
Nov 16 '17 at 10:48
1
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How to track down log4net problems
I use log4net all the time, but one thing I've never figured out is how to tell what's going on on the inside. For example, I've got a console appender and a database appender in my project. I made a few changes to the database and the code, and now the database appender doesn't work anymore. I'll f...
Chrome: timeouts/interval suspended in background tabs?
...ted) setTimeout is not very accurate but for most appliances not dramatically inaccurate. Now if I run the test in in Chrome and let it run in a background tab (so, switching to another tab and browse on there), returning to the test and inspecting te results (if the test finished) they are dramat...