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ImportError: Cannot import name X
...n usually produces a tree of one-way dependencies and this is normally the best approach. But there are exceptions to this. C++ classes certainly can refer to one another circularly. (Although it is impossible for them to be composed of one another.) Without forward-declaration, this is a problem in...
Organizing a multiple-file Go project [closed]
...ecause they affect import paths and how others can reuse them.
To get the best results I have worked out the following approach.
myproj/
main/
mypack.go
mypack.go
Where mypack.go is package mypack and main/mypack.go is (obviously) package main.
If you need additional support files you h...
HTML 5 Favicon - Support?
...support the sizes attribute:
Safari: Yes, it picks the picture that fits best.
Opera: Yes, it picks the picture that fits best.
IE11: Not sure. It apparently takes the larger picture it finds, which is a bit crude but okay.
Chrome: No, see bugs 112941 and 324820. In fact, Chrome tends to load all ...
How can I remove specific rules from iptables?
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The best solution that works for me without any problems looks this way:
1. Add temporary rule with some comment:
comment=$(cat /proc/sys/kernel/random/uuid | sed 's/\-//g')
iptables -A ..... -m comment --comment "${comment}" -j...
What's onCreate(Bundle savedInstanceState)
...comment I made (almost two years ago) is not entirely correct. I guess the best way to put it is the Bundle argument to onCreate(Bundle) will be non-null if and only if the Activity had it's onSaveInstanceState method previously called. This happens during orientation changes... and also happens whe...
How to change the order of DataFrame columns?
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@NicholasMorley - This isn't the best answer if you have, say, 1000 columns in your df.
– AGS
Jul 21 '17 at 20:19
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Group query results by month and year in postgresql
... is a shorthand instead of using the column aliases, though it is probably best to use the full "to_char(...)" and "extract(...)" expressions for readability.
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How do I dump the data of some SQLite3 tables?
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Not the best way, but at lease does not need external tools (except grep, which is standard on *nix boxes anyway)
sqlite3 database.db3 .dump | grep '^INSERT INTO "tablename"'
but you do need to do this command for each table you a...
Changing the interval of SetInterval while it's running
... easier to read. Also take note of the renaming of t to tick, which was my best guess as to whatever "t" is supposed to stand for. t is a pretty bad variable name.
– Braden Best
Jul 17 '16 at 1:47
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Check orientation on Android phone
...orrect (it is used by window manager, so it should better be). I'd say the best idea is to do the width/height checking ALWAYS. If you think about a moment, this is exactly what you want - to know if width is smaller than height (portrait), the opposite (landscape) or if they are the same (square).
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