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TypeError: 'dict_keys' object does not support indexing
...ict_keys object behaves a lot more like just the keys half of a dict. Specifically, they support O(1) membership testing (and other set-like methods that can be implemented efficiently on top of that fact). These things aren't possible with a list and if you want a list of the dict's keys, you've ...
Get battery level and state in Android
...amically, because it can not be received through components declared in manifests, only by explicitly registering for it with Context.registerReceiver().
public class Main extends Activity {
private TextView batteryTxt;
private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
@...
Could not load file or assembly … An attempt was made to load a program with an incorrect format (Sy
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Also verify that the project isn't Any CPU with Prefer 32 bit checked. Project -> properties -> build
– Reid Evans
Nov 18 '13 at 18:34
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Please explain about insertable=false and updatable=false in reference to the JPA @Column annotation
If a field is annotated insertable=false, updatable=false , doesn't it mean that you cannot insert value nor change the existing value? Why would you want to do that?
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e.printStackTrace equivalent in python
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If you're working inside some kind of container such as Jython and therefore cannot just print the trace, you can format_exc instead to get a string.
– SeldomNeedy
Oct 14 '16 at 4:13
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How to find a table having a specific column in postgresql
...of a table. Is it possible to find the table(s) that has/have this column? If so, how?
6 Answers
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CSS: background image on background color
I have panel which I colored blue if this panel is being selected (clicked on it). Additionally, I add a small sign ( .png image) to that panel, which indicates that the selected panel has been already selected before.
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Send POST Request with Data Specified in File via Curl
...: text/xml" --data "@path_of_file" host:port/post-file-path
For example, if you have the data in a file called stuff.xml then you would do something like:
curl -H "Content-Type: text/xml" --data "@stuff.xml" host:port/post-file-path
The stuff.xml filename can be replaced with a relative or full...
Eclipse and Windows newlines
...ommit to CVS. And alas, windows newlines have polluted many files, so CVS diff dumps the entire file, even when I changed a line or two!
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How to forward declare a template class in namespace std?
... std::less on a user-defined type. Someone else can cite the relevant text if necessary.
Just #include <list> and don't worry about it.
Oh, incidentally, any name containing double-underscores is reserved for use by the implementation, so you should use something like TEST_H instead of __TES...