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Generic TryParse
... answered Jul 1 '11 at 22:11
Charlie BrownCharlie Brown
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How do you use the Immediate Window in Visual Studio?
...tMessage()
"hello"
A very common way to see the value of a method is to select the method name of a class and do a ‘Add Watch’ so that you can see its current value in the Watch window. However, once again, the object needs to be instantiated and in scope for a valid value to be displayed. ...
UTF-8 byte[] to String
...Look at the constructor for String
String str = new String(bytes, StandardCharsets.UTF_8);
And if you're feeling lazy, you can use the Apache Commons IO library to convert the InputStream to a String directly:
String str = IOUtils.toString(inputStream, StandardCharsets.UTF_8);
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C compile error: “Variable-sized object may not be initialized”
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This gives error:
int len;
scanf("%d",&len);
char str[len]="";
This also gives error:
int len=5;
char str[len]="";
But this works fine:
int len=5;
char str[len]; //so the problem lies with assignment not declaration
You need to put value in the following way:
s...
How to implement one-to-one, one-to-many and many-to-many relationships while designing tables?
...ction table
Example queries:
-- Getting all students for a class:
SELECT s.student_id, last_name
FROM student_classes sc
INNER JOIN students s ON s.student_id = sc.student_id
WHERE sc.class_id = X
-- Getting all classes for a student:
SELECT c.class_id, name
FROM s...
Integer to hex string in C++
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WARNIG: this will not work for single byte because char is always threated as char
– ov7a
Feb 15 '16 at 9:36
5
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UINavigationBar custom back button without title
...se that you have a navigation controller going to ViewA from ViewB. In IB, select ViewA's navigation bar, you should see these options: Title, Prompt and Back Button.
ViewA navigate bar options
The trick is choose your destiny view controller back button title (ViewB) in the options of previous ...
How do I find out if first character of a string is a number?
In Java is there a way to find out if first character of a string is a number?
5 Answers
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Objective-C and Swift URL encoding
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To escape the characters you want is a little more work.
Example code
iOS7 and above:
NSString *unescaped = @"http://www";
NSString *escapedString = [unescaped stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLHo...
unsigned int vs. size_t
...y removed all absolute guarantees about integer ranges (excluding unsigned char). The standard does not seem to contain the string '65535' or '65536' anywhere, and '+32767' only occurs (1.9:9) in a note as possible largest integer representable in int; no guarantee is given even that INT_MAX cannot ...