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Jinja2 template variable if None Object set a default value
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Use the none builtin function (http://jinja.pocoo.org/docs/templates/#none):
{% if p is not none %}
{{ p.User['first_name'] }}
{% else %}
NONE
{%endif %}
or
{{ p.User['first_name'] if p != None else 'NONE' }}
or if you need an empty string:
{{ p.User['first...
fatal: could not read Username for 'https://github.com': No such file or directory
...setup SSH keys here: https://help.github.com/articles/generating-ssh-keys
OR
git remote add origin https://{username}:{password}@github.com/{username}/project.git
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How to tell if a string is not defined in a Bash shell script
If I want to check for the null string I would do
12 Answers
12
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Evaluating a mathematical expression in a string
This returns the following error:
11 Answers
11
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How do I keep Python print from adding newlines or spaces? [duplicate]
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import sys
sys.stdout.write('h')
sys.stdout.flush()
sys.stdout.write('m')
sys.stdout.flush()
You need to call sys.stdout.flush() because otherwise it will hold the text in a buffer and you won't see it.
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Java regular expression OR operator
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You can just use the pipe on its own:
"string1|string2"
for example:
String s = "string1, string2, string3";
System.out.println(s.replaceAll("string1|string2", "blah"));
Output:
blah, blah, string3
The main reason to use parentheses is to limit the scope of the alternatives:
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Pros and Cons of Interface constants [closed]
...ou can avoid the use of constants by implementing other patterns (strategy or perhaps flyweight), there is something to be said for not needing a half dozen other classes to represent a concept. I think what it boils down to, is how likely is there a need for other constants. In other words, is th...
Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
Note: This question was originally asked here but the bounty time expired even though an acceptable answer was not actually found. I am re-asking this question including all details provided in the original question.
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vector vs. list in STL
...ut the end of a sequence repeatedly.
Check out the complexity guarantees for each different type of container:
What are the complexity guarantees of the standard containers?
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check android application is in foreground or not? [duplicate]
I went through a lot of answers for this question.But it's all about single activity..How to check whether the whole app is running in foreground or not ?
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