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“Insert if not exists” statement in SQLite
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147
If you have a table called memos that has two columns id and text you should be able to do lik...
How to get result of console.trace() as string in javascript with chrome or firefox?
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103
I'm not sure about firefox, but in v8/chrome you can use a method on the Error constructor cal...
Efficient way to apply multiple filters to pandas DataFrame or Series
...numpy) allow for boolean indexing, which will be much more efficient:
In [11]: df.loc[df['col1'] >= 1, 'col1']
Out[11]:
1 1
2 2
Name: col1
In [12]: df[df['col1'] >= 1]
Out[12]:
col1 col2
1 1 11
2 2 12
In [13]: df[(df['col1'] >= 1) & (df['col1'] <=1 )]
Out...
HTML 5 Favicon - Support?
...urse) is Internet Explorer. IE does not support PNG favicons until version 11. So our first line is a conditional comment for favicons in IE 9 and below:
<!--[if IE]><link rel="shortcut icon" href="path/to/favicon.ico"><![endif]-->
To cover the uses of the icon create it at 32x...
Why can I not push_back a unique_ptr into a vector?
...o dynamically allocate the object:
std::unique_ptr<int> ptr(new int(1));
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Meaning of Android Studio error: Not annotated parameter overrides @NonNull parameter
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124
It's an annotation, but the correct name is NonNull:
protected void onSaveInstanceState(@NonN...
TFS checkin error - could not find file
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edited Dec 17 '16 at 12:19
jessehouwing
83.1k1717 gold badges203203 silver badges278278 bronze badges
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Citing the author of a blockquote using Markdown syntax
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189
Markdown has no dedicated citation syntax.
Your best bet is something like this:
> Quote ...
How can I tell if my server is serving GZipped content?
...example.com/ --silent --write-out "%{size_download}\n" --output /dev/null
31032
$ curl http://example.com/ --silent -H "Accept-Encoding: gzip,deflate" --write-out "%{size_download}\n" --output /dev/null
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In the second case the client tells the server that it supports content encoding and you c...
How does comparison operator works with null int?
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210
According to MSDN - it's down the page in the "Operators" section:
When you perform compari...