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Doctrine and composite unique keys
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218
Answer the question:
use Doctrine\ORM\Mapping\UniqueConstraint;
/**
* Common\Model\Entity\Vi...
How can I access “static” class variables within class methods in Python?
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169
Instead of bar use self.bar or Foo.bar. Assigning to Foo.bar will create a static variable, an...
How to exit if a command failed?
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Try:
my_command || { echo 'my_command failed' ; exit 1; }
Four changes:
Change && to ||
Use { } in place of ( )
Introduce ; after exit and
spaces after { and before }
Since you want to print the message and exit only when the command fails ( exits with non-zero va...
Jump to matching XML tags in Vim
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answered Feb 1 '09 at 15:31
sykorasykora
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TreeMap sort by value
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179
You can't have the TreeMap itself sort on the values, since that defies the SortedMap specific...
When to use cla(), clf() or close() for clearing a plot in matplotlib?
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edited Jul 6 '18 at 2:08
spinkus
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answ...
How do I use Node.js Crypto to create a HMAC-SHA1 hash?
...const text = 'I love cupcakes'
const key = 'abcdeg'
crypto.createHmac('sha1', key)
.update(text)
.digest('hex')
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Using Core Data, iCloud and CloudKit for syncing and backup and how it works together
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183
It's like this:
Core Data on its own, is completely local and does not automatically work wi...
Record file copy operation with Git
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114
Git does not do rename tracking nor copy tracking, which means it doesn't record renames or co...
git pull VS git fetch Vs git rebase
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341
It should be pretty obvious from your question that you're actually just asking about the differ...