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uppercase first character in a variable with bash
...t Bash), the overhead of using a here-doc/string (temporary file creation) and it uses two substitutions compared to the best scored answer's one. If you absolutely must write legacy code, consider using a function instead of a subshell.
– Steve
Apr 13 '16 at 2...
How to see full symlink path
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If using OSX, omit the -f flag and then this works. i.e readlink symlinkName
– Josh Davenport
May 21 '14 at 11:34
6
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How to hide first section header in UITableView (grouped style)
...the result is that drawings are no longer aligned to pixels, causing blurs and reducing performance. Just try it in the simulator: it has an option to highlight problematic alignment.
– Codo
Nov 1 '13 at 17:02
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Why does an NSInteger variable have to be cast to long when used as a format argument?
...le on OS X (64-bit), because on that platform NSInteger is defined as long and is a 64-bit integer. The %i format, on the other hand, is for int, which is 32-bit. So the format and the actual parameter do not match in size.
Since NSInteger is 32-bit or 64-bit, depending on the platform, the compile...
How to convert an OrderedDict into a regular dict in python3
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Thanks, and also for the advice using pickle. I would use pickle and I actually do it in other places, but some constraints demand using a dict converted to string.
– Ben A.
Nov 23 '13 at 20:00
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PHP function overloading
... overload PHP functions. Function signatures are based only on their names and do not include argument lists, so you cannot have two functions with the same name. Class method overloading is different in PHP than in many other languages. PHP uses the same word but it describes a different pattern.
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Superscript in markdown (Github flavored)?
... to write O(n^2) sensibly, I would just type O(n<sup>2</sup>), and it would appear as O(n<sup>2</sup>). Nice. Now why didn't that work on SO markdown?
– phonetagger
Apr 2 '15 at 17:19
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Count occurrences of a char in a string using Bash
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I would use the following awk command:
string="text,text,text,text"
char=","
awk -F"${char}" '{print NF-1}' <<< "${string}"
I'm splitting the string by $char and print the number of resulting fields minus 1.
If your shell does not support the <...
How do I avoid capturing self in blocks when implementing an API?
I have a working app and I'm working on converting it to ARC in Xcode 4.2. One of the pre-check warnings involves capturing self strongly in a block leading to a retain cycle. I've made a simple code sample to illustrate the issue. I believe I understand what this means but I'm not sure the "corre...
Minimal web server using netcat
.../1.1 200 OK\n\n $(date)"'; done
The -cmakes netcat execute the given command in a shell, so you can use echo. If you don't need echo, use -e. For further information on this, try man nc. Note, that when using echo there is no way for your program (the date-replacement) to get the browser request. ...