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How do I remove objects from a JavaScript associative array?
...do not want to create a sparsely populated array - and you usually don't - then you should use Array#splice or Array#pop.
Note that the delete operator in JavaScript does not directly free memory. Its purpose is to remove properties from objects. Of course, if a property being deleted holds the onl...
Determine version of Entity Framework I am using?
... open the references folder and locate system.data.entity, click the item, then check the runtime version number in the Properties explorer, you will see the sub version as well. Mine for instance shows runtime version v4.0.30319 with the Version property showing 4.0.0.0. The EntityFramework.dll can...
Why an interface can not implement another interface?
...
If "Y extends X" and is not sealed, then it's possible to have another type "Z" which extends "Y". That will be true whether X is an interface or a class. If "W implements X", however, then it is not possible to have "V implements W". The fact that "extends"...
Should I embed images as data/base64 in CSS or HTML
...hat maybe its more effective on the base 64. Especially when you have more then one image in the source.
– meo
Mar 10 '11 at 10:12
2
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Android Studio quick documentation always “fetching documentation”
...ppData/Local/Android/sdk/docs/reference" />
Android Studio (any os)
Then, in File -> Invalidate Caches / Restart… select Invalidate, and retry using Quick Documentation. It should display instantly. If it doesn't, select Invalidate and Restart, and you should be good to go.
...
Pandas - Get first row value of a given column
...select by row first, and if the DataFrame has columns of different
dtypes, then Pandas copies the data into a new Series of object dtype. So
selecting columns is a bit faster than selecting rows. Thus, although
df_test.iloc[0]['Btime'] works, df_test['Btime'].iloc[0] is a little bit
more efficient.
...
Get current clipboard content? [closed]
...tor.clipboard. It can be used like this:
navigator.clipboard.readText()
.then(text => {
console.log('Pasted content: ', text);
})
.catch(err => {
console.error('Failed to read clipboard contents: ', err);
});
Or with async syntax:
const text = await navigator.clipboard.readTex...
Unicode (UTF-8) reading and writing to files in Python
... you should just enter the characters in the editor and your editor should then handle the conversion to UTF-8 and save it.
If you actually have a string in this format you can use the string_escape codec to decode it into a normal string:
In [15]: print 'Capit\\xc3\\xa1n\n'.decode('string_escape'...
Get difference between 2 dates in JavaScript? [duplicate]
... quotes. The rest of the code gets the time difference in milliseconds and then divides to get the number of days. Date expects mm/dd/yyyy format.
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Android 4.2: back stack behaviour with nested fragments
...ere is a fragment and the back stack of this fragment is not empty,
// then emulate 'onBackPressed' behaviour, because in default, it is not working
FragmentManager fm = getSupportFragmentManager();
for (Fragment frag : fm.getFragments()) {
if (frag.isVisible()) {
Fra...