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What is the easiest way to remove all packages installed by pip?
...to exclude those lines and remove the packages manually (elevated from the comments below):
pip freeze | grep -v "^-e" | xargs pip uninstall -y
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How to test equality of Swift enums with associated values
...se the default statement in the switch, so if you add a new enum case, the compiler doesn't make sure you add the clause to compare that new case for equality – you'll just have to remember and be careful when you make changes later down the line!
– Michael Waterfall
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Smart pointers: who owns the object? [closed]
...a naked pointer, the rules can be documented, but won't be enforced by the compiler and the code.
– Fabio Ceconello
May 18 '09 at 23:07
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How do I see if Wi-Fi is connected on Android?
...... your code here could throw a null pointer error. See developer.android.com/training/basics/network-ops/managing.html and in particular "The method getActiveNetworkInfo() returns a NetworkInfo..."
– eb80
Jun 5 '14 at 12:24
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When would anyone use a union? Is it a remnant from the C-only days?
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Unions are usually used with the company of a discriminator: a variable indicating which of the fields of the union is valid. For example, let's say you want to create your own Variant type:
struct my_variant_t {
int type;
union {
char char_...
Javascript switch vs. if…else if…else
...here is a direct link to a segment in the article addressing that: oreilly.com/server-administration/excerpts/even-faster-websites/…
– edhedges
May 6 '13 at 13:43
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Order of serialized fields using JSON.NET
...ion around the desire for Order to be respected in deserialisation: github.com/JamesNK/Newtonsoft.Json/issues/758 Basically no chance of this one.
– Tyeth
Apr 9 '19 at 14:40
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Convert Bitmap to File
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Try this:
bitmap.compress(Bitmap.CompressFormat.PNG, quality, outStream);
See this
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How to turn a String into a JavaScript function call? [duplicate]
... === 'function') {
fn(t.parentNode.id);
}
Edit: In reply to @Mahan's comment:
In this particular case, settings.functionName would be "clickedOnItem". This would, at runtime translate var fn = window[settings.functionName]; into var fn = window["clickedOnItem"], which would obtain a reference ...