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How to execute a bash command stored as a string with quotes and asterisk [duplicate]
... escape * since it has special meaning when it's naked or in double quoted strings: use single quotes.
MYSQL='mysql AMORE -u username -ppassword -h localhost -e'
QUERY="SELECT "'*'" FROM amoreconfig" ;# <-- "double"'single'"double"
eval $MYSQL "'$QUERY'"
Bonus: It also reads nice: eval mysql q...
Where is the itoa function in Linux?
itoa() is a really handy function to convert a number to a string. Linux does not seem to have itoa() , is there an equivalent function or do I have to use sprintf(str, "%d", num) ?
...
Long list of if statements in Java
...void exec() {
// ...
}
}
// etc etc
then build a Map<String,Command> object and populate it with Command instances:
commandMap.put("A", new CommandA());
commandMap.put("B", new CommandB());
then you can replace your if/else if chain with:
commandMap.get(value).exec();
...
Open file dialog and select a file using WPF controls and C#
...a TextBox
if (result == true)
{
// Open document
string filename = dlg.FileName;
textBox1.Text = filename;
}
}
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Optional Parameters with C++ Macros
... macro.
enum
{
plain = 0,
bold = 1,
italic = 2
};
void PrintString(const char* message, int size, int style)
{
}
#define PRINT_STRING_1_ARGS(message) PrintString(message, 0, 0)
#define PRINT_STRING_2_ARGS(message, size) PrintString(message, size, 0)
#define PRINT_...
How to get a variable value if variable name is stored as string?
How can I retrieve a bash variable value if I have the variable name as string?
7 Answers
...
Convert hyphens to camel case (camelCase)
...
Try this:
var camelCased = myString.replace(/-([a-z])/g, function (g) { return g[1].toUpperCase(); });
The regular expression will match the -i in marker-image and capture only the i. This is then uppercased in the callback function and replaced.
...
Difference between res.send and res.json in Express.js
...on spaces', 2);
app.set('json replacer', replacer);
And passed to a JSON.stringify() like so:
JSON.stringify(value, replacer, spacing);
// value: object to format
// replacer: rules for transforming properties encountered during stringifying
// spacing: the number of spaces for indentation
This...
Can't find a “not equal” css attribute selector
... only want div elements that have an attribute foo that is set to an empty string, you should use:
div[foo]:not([foo=''])
If you want all elements with attribute foo that is neither y nor z, you should use:
div[foo]:not([foo='y']):not([foo='z'])
...
Format LocalDateTime with Timezone in Java8
...ter formatter = DateTimeFormatter.ofPattern("yyyyMMdd HH:mm:ss.SSSSSS Z");
String s = ZonedDateTime.now().format(formatter);
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