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What is the difference/usage of homebrew, macports or other package installation tools? [closed]
...ll with one command. Forget to do the same with Homebrew.
MacPorts support groups.
foo@macpro:~/ port select --summary
Name Selected Options
==== ======== =======
db none db46 none
gcc none gcc42 llvm-gcc42 mp-gcc48 none
llvm none ...
Regex for numbers only
...s or decimals. (The ?: in the parens just makes the parens a non-capturing group and used to only group for clarity.)
– butterywombat
Sep 29 '14 at 16:10
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MySQL - Make an existing Field Unique
...our problem to set unique key for existing table
alter ignore table ioni_groups add unique (group_name);
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Google Maps V3 - How to calculate the zoom level for a given bounds
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A similar question has been asked on the Google group: http://groups.google.com/group/google-maps-js-api-v3/browse_thread/thread/e6448fc197c3c892
The zoom levels are discrete, with the scale doubling in each step. So in general you cannot fit the bounds you want exactly (...
How to Update Multiple Array Elements in mongodb
..."$unwind": "$events" },
{ "$match": { "events.handled": 1 } },
{ "$group": {
"_id": "$_id",
"events": { "$push": "$events" }
}}
])
In all cases where the MongoDB version supports a "cursor" from aggregate output, then this is just a matter of choosing an approac...
Eclipse: have the same file open in two editors?
...w View Into File which opens the tab with focus into a new tab in the same group where you can then drag it to another group if you wish.
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Regex lookahead for 'not followed by' in grep
...ports negative lookaheads.
*If your implementation supports non-capturing groups then you can avoid capturing extra characters.
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Vim 80 column layout concerns
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ErrorMsg is a highlight-group. There are a lot of default highlight groups in Vim which you can use based on the color encoding you want for this case.
– crisron
Apr 27 '18 at 7:10
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What is the difference between “pom” type dependency with scope “import” and without “import”?
...nt>
<dependencies>
<dependency>
<groupId>other.pom.group.id</groupId>
<artifactId>other-pom-artifact-id</artifactId>
<version>SNAPSHOT</version>
<scope>import</scope>
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Drop all duplicate rows across multiple columns in Python Pandas
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use groupby and filter
import pandas as pd
df = pd.DataFrame({"A":["foo", "foo", "foo", "bar"], "B":[0,1,1,1], "C":["A","A","B","A"]})
df.groupby(["A", "C"]).filter(lambda df:df.shape[0] == 1)
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