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Accessing a Dictionary.Keys Key through a numeric index
I'm using a Dictionary<string, int> where the int is a count of the key.
15 Answers
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How do I show the value of a #define at compile-time?
...al query, but this may still be useful.
This can be done in GCC using the stringify operator "#", but it requires two stages.
#define XSTR(x) STR(x)
#define STR(x) #x
The value of a macro can then be displayed with:
#pragma message "The value of ABC: " XSTR(ABC)
See: 3.4 Stringification in th...
Increment value in mysql update query
...what you were doing wrong is that you passed the old amount of points as a string (points='5'+1), and you can't add a number to a string. ;)
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push_back vs emplace_back
...::map<int, Complicated> m;
int anInt = 4;
double aDouble = 5.0;
std::string aString = "C++";
// cross your finger so that the optimizer is really good
m.insert(std::make_pair(4, Complicated(anInt, aDouble, aString)));
// should be easier for the optimizer
m.emplace(4, anInt, aDouble, aStrin...
how to read all files inside particular folder
...
using System.IO;
...
foreach (string file in Directory.EnumerateFiles(folderPath, "*.xml"))
{
string contents = File.ReadAllText(file);
}
Note the above uses a .NET 4.0 feature; in previous versions replace EnumerateFiles with GetFiles). Also, repla...
How do I set the default locale in the JVM?
...st;
import java.util.List;
public class JVMArgumentEnforcer
{
private String argument;
public JVMArgumentEnforcer(String argument)
{
this.argument = argument;
}
public static long getTotalPhysicalMemory()
{
com.sun.management.OperatingSystemMXBean bean =
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How can I check if a string represents an int, without using try/except?
Is there any way to tell whether a string represents an integer (e.g., '3' , '-17' but not '3.14' or 'asfasfas' ) Without using a try/except mechanism?
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How can I make an “are you sure” prompt in a Windows batchfile?
...t command has the /p option you can get user input
SET /P variable=[promptString]
see set /? for more info
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UnicodeEncodeError: 'ascii' codec can't encode character u'\xa0' in position 20: ordinal not in rang
...de to encoded text / bytes.
Instead, properly use .encode() to encode the string:
p.agent_info = u' '.join((agent_contact, agent_telno)).encode('utf-8').strip()
or work entirely in unicode.
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In Ruby how do I generate a long string of repeated text?
What is the best way to generate a long string quickly in ruby? This works, but is very slow:
2 Answers
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