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How to access environment variable values?
...mes you might need to see a complete list!
# using get will return `None` if a key is not present rather than raise a `KeyError`
print(os.environ.get('KEY_THAT_MIGHT_EXIST'))
# os.getenv is equivalent, and can also give a default value instead of `None`
print(os.getenv('KEY_THAT_MIGHT_EXIST', defa...
AngularJs ReferenceError: $http is not defined
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StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
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Add a new line in file?
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StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
...
Node.js client for a socket.io server
... is supported by socket.io. No matter whether its node, java, android or swift. All you have to do is install the client package of socket.io.
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Delaying a jquery script until everything else has loaded
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Sure, if you are already doing this inside $(document).ready(), this will be no different.
– Jose Basilio
Jun 18 '09 at 14:43
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Lambda expression to convert array/List of String to array/List of Integers
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If you're using Guava, you can also use Lists.transform().
– Alexandros
Sep 22 '15 at 9:53
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Changing the maximum length of a varchar column?
...olumn <<new_datatype>> [NULL | NOT NULL]
But remember to specify NOT NULL explicitly if desired.
ALTER TABLE YourTable ALTER COLUMN YourColumn VARCHAR (500) NOT NULL;
If you leave it unspecified as below...
ALTER TABLE YourTable ALTER COLUMN YourColumn VARCHAR (500);
Then the co...
Selecting a row of pandas series/dataframe by integer index
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What if you wanted the 2nd AND 3rd AND 4th row?
– FaCoffee
Nov 7 '16 at 20:36
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Where do I find the current C or C++ standard documents?
...99, C++98, C++03 will be hard to find for purchase from a standards body. If you need an old revision of a standard, check Techstreet as one possible source. For example, it can still provide the Canadian version CAN/CSA-ISO/IEC 9899:1990 standard in PDF, for a fee.
Non-PDF electronic versions of...
Assign format of DateTime with data annotations?
... @Steven: Can you try removing [DataType(DataType.DateTime)] if you haven't already?
– David Fox
Mar 9 '11 at 22:35
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