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What is the C# version of VB.net's InputDialog?
...Microsoft.VisualBasic.Interaction namespace:
using Microsoft.VisualBasic;
string input = Interaction.InputBox("Prompt", "Title", "Default", x_coordinate, y_coordinate);
Only the first argument for prompt is mandatory
shar...
Why does ('0' ? 'a' : 'b') behave different than ('0' == true ? 'a' : 'b') [duplicate]
...for completeness:
('0' ? 'a' : 'b')
is 'a', because '0' is a non-empty string, which always evaluates to true:
String: The result is false if the argument is the empty String (its length is zero);
otherwise the result is true.
Now to '0' == true.
Two type conversions will take place h...
Explode string by one or more spaces or tabs
How can I explode a string by one or more spaces or tabs?
10 Answers
10
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What is the most frequent concurrency issue you've encountered in Java? [closed]
...erent open source libraries did something like this:
private static final String LOCK = "LOCK"; // use matching strings
// in two different libraries
public doSomestuff() {
synchronized(LOCK) {
this.work();
}
}
At first glance, this look...
In log4j, does checking isDebugEnabled before logging improve performance?
...ensive computation of the log message when it involves invocation of the toString() methods of various objects and concatenating the results.
In the given example, the log message is a constant string, so letting the logger discard it is just as efficient as checking whether the logger is enabled, ...
How to use hex color values
... a combination of the previous methods. There is absolutely no need to use strings.
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How to use an existing database with an Android application [duplicate]
...trying this code, please find this line in the below code:
private static String DB_NAME ="YourDbName"; // Database name
DB_NAME here is the name of your database. It is assumed that you have a copy of the database in the assets folder, so for example, if your database name is ordersDB, then the ...
How can I loop through a C++ map of maps?
...+11 - you can use a ranged based for loop and simply do:
std::map<std::string, std::map<std::string, std::string>> mymap;
for(auto const &ent1 : mymap) {
// ent1.first is the first key
for(auto const &ent2 : ent1.second) {
// ent2.first is the second key
// ent2.sec...
How to respond with HTTP 400 error in a Spring MVC @ResponseBody method returning String?
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What if you are passing something other than a string back? As in a POJO or other object?
– mrshickadance
Nov 18 '14 at 16:28
11
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Empty arrays seem to equal true and false at the same time
...are values of this object and the primitive false value. Internally, arr.toString() is called, which returns an empty string "".
This is because toString called on Array returns Array.join(), and empty string is one of falsy values in JavaScript.
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