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Ruby regular expression using variable name
...tr.gsub( /#{var}/, 'foo' ) # => "foo foo foo"
However, if your search string contains metacharacters and you do not want them interpreted as metacharacters, then use Regexp.escape like this:
var = "*This*"
str = "*This* is a string"
p str.gsub( /#{Regexp.escape(var)}/, 'foo' )
# => "foo is ...
What is the best way to iterate over a dictionary?
...
foreach(KeyValuePair<string, string> entry in myDictionary)
{
// do something with entry.Value or entry.Key
}
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How to read from standard input in the console?
... bufio.NewReader(os.Stdin)
fmt.Print("Enter text: ")
text, _ := reader.ReadString('\n')
fmt.Println(text)
As it works on my machine. However, for the next block you need a pointer to the variables you're assigning the input to. Try replacing fmt.Scanln(text2) with fmt.Scanln(&text2). Don't use...
How do I use extern to share variables between source files?
...
SFLAGS = -std=c11
GFLAGS = -g
OFLAGS = -O3
WFLAG1 = -Wall
WFLAG2 = -Wextra
WFLAG3 = -Werror
WFLAG4 = -Wstrict-prototypes
WFLAG5 = -Wmissing-prototypes
WFLAGS = ${WFLAG1} ${WFLAG2} ${WFLAG3} ${WFLAG4} ${WFLAG5}
UFLAGS = # Set on command line only
CFLAGS = ${SFLAGS} ${GFLAGS} ${OFLAGS} ${...
ASP.NET MVC - Find Absolute Path to the App_Data folder from Controller
...
ASP.NET MVC1 -> MVC3
string path = HttpContext.Current.Server.MapPath("~/App_Data/somedata.xml");
ASP.NET MVC4
string path = Server.MapPath("~/App_Data/somedata.xml");
MSDN Reference:
HttpServerUtility.MapPath Method
...
Git search for string in a single file's history
...g method called bar , so I want to search the history of foo.rb for the string bar to see if it was ever defined in the past.
...
Inserting a Python datetime.datetime object into MySQL
...t rather than a DateTime.
If that doesn't work, then converting that to a string should work:
now = datetime.datetime(2009,5,5)
str_now = now.date().isoformat()
cursor.execute('INSERT INTO table (name, id, datecolumn) VALUES (%s,%s,%s)', ('name',4,str_now))
...
How to urlencode a querystring in Python?
I am trying to urlencode this string before I submit.
13 Answers
13
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Convert Go map to json
I tried to convert my Go map to a json string with encoding/json Marshal, but it resulted in a empty string.
3 Answers
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How to remove all null elements from a ArrayList or String Array?
... It creates Mutable copy and will not throw any exception.
public static String[] clean(final String[] v) {
List<String> list = new ArrayList<String>(Arrays.asList(v));
list.removeAll(Collections.singleton(null));
return list.toArray(new String[list.size()]);
}
...