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What's the maximum value for an int in PHP?
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From the PHP manual:
The size of an integer is
platform-dependent, although a maximum
value of about two billion is the
usual value (that's 32 bits signed).
PHP does not support unsigned
integers. Integer size can be
determi...
Check if key exists and iterate the JSON array using Python
I have a bunch of JSON data from Facebook posts like the one below:
7 Answers
7
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Cross-platform way of getting temp directory in Python
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f.seek(0) # return to beginning of file
print f.read() # reads data back from the file
f.close() # temporary file is automatically deleted here
For completeness, here's how it searches for the temporary directory, according to the documentation:
The directory named by the TMPDIR environment va...
Identify if a string is a number
...hat integer has positive and negative values. But If this string is coming from user entered textbox then it should return false.
– user2323308
Aug 28 '13 at 13:58
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Check for array not empty: any?
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>> [nil, 1].any?
=> true
>> [nil, nil].any?
=> false
From the documentation:
If the block is not given, Ruby adds
an implicit block of {|obj| obj} (that
is any? will return true if at least
one of the collection members is not
false or nil).
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How to use null in switch
...d that:
The prohibition against using null as a switch label prevents one from writing code that can never be executed. If the switch expression is of a reference type, such as a boxed primitive type or an enum, a run-time error will occur if the expression evaluates to null at run-time.
You must ...
How to fetch all Git branches
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You can fetch all branches from all remotes like this:
git fetch --all
It's basically a power move.
fetch updates local copies of remote branches so this is always safe for your local branches BUT:
fetch will not update local branches (which tra...
Jackson overcoming underscores in favor of camel-case
I retrieve a JSON string from internet; like most JSON I've seen it includes long keys that are separated by underscores. Essentially, my goal is to deserialize JSON into java-objects, but I don't use underscores in java-code.
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How to install multiple python packages at once using pip
... as a space-delimited list, e.g.:
pip install wsgiref boto
For installing from a text file, then, from pip install --help:
-r FILENAME, --requirement=FILENAME
Install all the packages listed in the given requirements file. This option can be used multiple times.
Take a look at the pip documentat...
How to duplicate a git repository? (without forking)
...py whole of one onto the other empty one which has different access levels from the first one. The copy and the mother repository should not be linked together.
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