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Installing R on Mac - Warning messages: Setting LC_CTYPE failed, using “C”
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In my system (OS X 10.11 El Capitán) I have environment variables LANG and LC_ALL set to en_US.UTF-8 for my terminal (in the ~/.bash_profile file), and command line R does not display those warning messages; but R Studio does. Fo...
How do I check if an index exists on a table field in MySQL?
...ame) full_path_schema, y.name index_name
FROM information_schema.INNODB_SYS_TABLES as x
JOIN information_schema.INNODB_SYS_INDEXES as y on x.TABLE_ID = y.TABLE_ID
WHERE x.name = 'your_schema'
and y.name = 'your_column') d on concat(a.table_schema, '/', a.table_name, '/', a.column_name) ...
How often does python flush to a file?
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For file operations, Python uses the operating system's default buffering unless you configure it do otherwise. You can specify a buffer size, unbuffered, or line buffered.
For example, the open function takes a buffer size argument.
http://docs.python.org/library/func...
Convert base64 string to ArrayBuffer
I need to convert a base64 encode string into an ArrayBuffer.
The base64 strings are user input, they will be copy and pasted from an email, so they're not there when the page is loaded.
I would like to do this in javascript without making an ajax call to the server if possible.
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In Python, how do I convert all of the items in a list to floats?
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float(item) do the right thing: it converts its argument to float and and return it, but it doesn't change argument in-place. A simple fix for your code is:
new_list = []
for item in list:
new_list.append(float(item))
The same code can written shorter u...
Why cannot cast Integer to String in java?
...jB or (Object) objA will work.
Hence as others have mentioned already, to convert an integer to string use:
String.valueOf(integer), or Integer.toString(integer) for primitive,
or
Integer.toString() for the object.
s...
Convert a RGB Color Value to a Hexadecimal String
... 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix...
Drop all tables whose names begin with a certain string
... TableName,
so.object_id AS TableID,
0 AS Ordinal
FROM sys.objects AS so
WHERE so.type = 'U'
AND so.is_ms_Shipped = 0
AND OBJECT_NAME(so.object_id)
LIKE 'MyPrefix%'
UNION ALL
SELECT OBJECT_SCHEMA_NAME(so.object_id) AS SchemaName,
OBJEC...
Converting string to title case
...ry/…): "However, this method does not currently provide proper casing to convert a word that is entirely uppercase, such as an acronym" - you should probably just ToLower() it first (I know this is old, but just in case someone else stumbles on it and wonders why!)
– nizmow
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What happens if you static_cast invalid value to enum class?
...tic.cast]/10
A value of integral or enumeration type can be explicitly converted to an enumeration type. The value is unchanged if the original value is within the range of the enumeration values (7.2). Otherwise, the resulting value is unspecified (and might not be in that range).
Let's look ...