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How to copy files between two nodes using ansible
... the Vagrantfile config.ssh.insert_key = false to force Vagrant to use the ONE insecure_key for accessing all machines. But now I even do not get an error message (it waits forever). Also bug github.com/ansible/ansible/issues/7250 says it is not possible to copy from remote to remote.
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Show which git tag you are on?
...ows:
git describe --exact-match --tags $(git log -n1 --pretty='%h')
Someone with more git-fu may have a more elegant solution...
This leverages the fact that git-log reports the log starting from what you've checked out. %h prints the abbreviated hash. Then git describe --exact-match --tags find...
What is a NullReferenceException, and how do I fix it?
...s normal via a. Note that accessing it via a.Value throws an InvalidOperationException instead of a NullReferenceException if a is null - you should do the check beforehand, i.e. if you have another on-nullable variable int b; then you should do assignments like if (a.HasValue) { b = a.Value; } or s...
Get object by id()? [duplicate]
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If the object is still there, this can be done by ctypes:
import ctypes
a = "hello world"
print ctypes.cast(id(a), ctypes.py_object).value
output:
hello world
If you don't know whether the object is still there, this is a recipe for undefined behavior and weird ...
How to set focus on input field?
...g some button), set focus on it.
Create a directive essentially like the one above. Watch some scope property, and when it becomes true (set it in your ng-click handler), execute element[0].focus(). Depending on your use case, you may or may not need a $timeout for this one:
<button class="b...
Passing properties by reference in C#
... return s; } void Main(){ person.MobilePhone.GetValueOrDefault(person.WorkPhone); }
– BlackjacketMack
Sep 4 '12 at 17:00
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How to download and save a file from Internet using Java?
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Use apache commons-io, just one line code:
FileUtils.copyURLToFile(URL, File)
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Implications of foldr vs. foldl (or foldl')
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Their semantics differ so you can't just interchange foldl and foldr. The one folds the elements up from the left, the other from the right. That way, the operator gets applied in a different order. This matters for all non-associative operations, such as subtraction.
Haskell.org has an interestin...
How to print struct variables in console?
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Thanks for your answer but there is one more thing. My JSON files are related to an API... therefor I dont want to set the Id or Name, I just want to get it over the API and print it in console. How can I do that?
– fnr
J...
How create table only using tag and Css
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Thank you! Someone who actually answered his question and not just say that "that's a dumb idea." I hate it when people don't answer the questions... If he asked it, it should be answered
– Brian Leishman
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