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How to declare constant map
...Go, but it is throwing an error. Could anyone please help me with the syntax of declaring a constant in Go?
5 Answers
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Outline effect to text
Are there any ways in CSS to give outlines to text with different colors ? I want to highlight some parts of my text to make it more intuitive - like the names, links, etc. Changing the link colors etc. are common nowadays, so I want something new.
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Why do some claim that Java's implementation of generics is bad?
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Bad:
Type information is lost at compile time, so at execution time you can't tell what type it's "meant" to be
Can't be used for value types (this is a biggie - in .NET a List<byte> really is backed by a byte[] for example, and no boxing is required)
Syntax for calling ge...
Should I URL-encode POST data?
I'm POSTing data to an external API (using PHP, if it's relevant).
4 Answers
4
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How To Set Up GUI On Amazon EC2 Ubuntu server
...ection:
su - awsgui
vncserver
vncserver -kill :1
vim /home/awsgui/.vnc/xstartup
Then hit the Insert key, scroll around the text file with the keyboard arrows, and delete the pound (#) sign from the beginning of the two lines under the line that says
"Uncomment the following two lines for norm...
Change the name of a key in dictionary
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This will raise a KeyError either way if the key is not existing, but you could use dict[new_value] = dict.pop(old_value, some_default_value) to avoid that
– Tobias Kienzler
Jul 31 '13 at 10:59
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How to convert CFStringRef to NSString?
...ll free bridged", meaning that you can simply typecast between them.
For example:
CFStringRef aCFString = (CFStringRef)aNSString;
works perfectly and transparently. Likewise:
NSString *aNSString = (NSString *)aCFString;
The previous syntax was for MRC. If you're using ARC, the new casting syn...
Why am I getting an Exception with the message “Invalid setup on a non-virtual (overridable in VB) m
...ile running a test using mock object, MOQ actually creates an in-memory proxy type which inherits from your "XmlCupboardAccess" and overrides the behaviors that you have set up in the "SetUp" method. And as you know in C#, you can override something only if it is marked as virtual which isn't the ca...
Filter data.frame rows by a logical condition
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To select rows according to one 'cell_type' (e.g. 'hesc'), use ==:
expr[expr$cell_type == "hesc", ]
To select rows according to two or more different 'cell_type', (e.g. either 'hesc' or 'bj fibroblast'), use %in%:
expr[expr$cell_type %in% c("hesc", "bj fibroblast"), ]
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How to use the 'sweep' function
...would have sufficed (e.g., apply ),
other times, it's impossible to know exactly what it's is doing without
spending a fair amount of time to step through the code block it's in.
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