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convert_tz returns null

...d answer (which is the same on MySQL's dev site) the command was unable to convert between timezones such as SELECT CONVERT_TZ('2004-01-01 12:00:00','UTC','MET') AS time It turns out that on OS X there are two files that cause problems: /usr/share/zoneinfo/Factory and /usr/share/zoneinfo/+VERSION...
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Convert String to Float in Swift

I'm trying to convert numbers taken from a UITextField, which I presume, are actually Strings, and convert them to Float, so I can multiply them. ...
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How to generate random number with the specific length in python

...is quicker than alternatives. Just add the neccessary preceding zeros when converting to a string. import random num = random.randrange(1, 10**3) # using format num_with_zeros = '{:03}'.format(num) # using string's zfill num_with_zeros = str(num).zfill(3) Alternatively if you don't want to save t...
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Best way to combine two or more byte arrays in C#

... But are you actually converting it into an array at the end, as the question requires? If not, of course it's faster - but it's not fulfilling the requirements. – Jon Skeet Jan 6 '09 at 8:17 ...
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How many bytes in a JavaScript string?

..., but: In this answer, unescape is not used, to decode URIs. It is used to convert %xx sequences into single characters. As encodeURIComponent encodes a string as UTF-8, representing codeunits either as its corresponding ASCII character or as a %xx sequence, calling unescape(encodeURIComponent(...))...
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How to display default text “--Select Team --” in combo box on pageload in WPF?

... You can do this without any code behind by using a IValueConverter. <Grid> <ComboBox x:Name="comboBox1" ItemsSource="{Binding MyItemSource}" /> <TextBlock Visibility="{Binding SelectedItem, ElementName=comboBox1, Converter={StaticResource...
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How to delete a file or folder?

...l.rmtree() Example for shutil.rmtree() #!/usr/bin/python import os import sys import shutil # Get directory name mydir= raw_input("Enter directory name: ") ## Try to remove tree; if failed show an error using try...except on screen try: shutil.rmtree(mydir) except OSError as e: print ("Er...
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How do I convert an HttpRequestBase into an HttpRequest object?

...typemock or some other magic). Simply use the HttpRequestWrapper class to convert as shown below. var httpRequestBase = new HttpRequestWrapper(Context.Request); share | improve this answer ...
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Get time in milliseconds using C#

...lf, and is always 1000 numbers bigger than it was a second ago. I've tried converting DateTime.Now to a TimeSpan and getting the TotalMilliseconds from that... but I've heard it isn't perfectly accurate. ...
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Converting an array of objects to ActiveRecord::Relation

... How can I convert an Array of objects to an ActiveRecord::Relation? Preferably without doing a where each time. You cannot convert an Array to an ActiveRecord::Relation since a Relation is just a builder for a SQL query and its metho...