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IF statement: how to leave cell blank if condition is false (“” does not work)
...w it isn't "blank" as such, but it's another possibility if you have blank strings in your data and "" is a valid option.
Also, count(a:a) will not count cells which have been set to n/a by doing this.
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How exactly does CMake work?
... a Visual Studio solution.
CMakeCache.txt - This is a persistent key/value string storage which is used to cache value between runs. Values stored in here can be paths to library dependencies or whether an optional component is to be built at all. The list of variables is mostly identical to the one...
Make column not nullable in a Laravel migration
... @Musa Apparently you can set a column nullable (ex: $table->string('colmn', 255)->nullable()->change();) but the reverse doesn't appear to work ($table->string('colmn', 255)->change();), so you still need to use raw db queries for this
– Luís Cruz
...
SVG Positioning
...rementing a group's X-transform requires writing a potentially complicated string and storing all the variables somewhere else
– Eyelash
Sep 18 '16 at 14:10
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Why does Maven warn me about encoding?
...er encoding scheme to be applied when filtering resources.
Type: java.lang.String
Required: No
User Property: encoding
Default: ${project.build.sourceEncoding}
So this means you only need to define this property and the plugin will automatically use this encoding.
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How do emulators work and how are they written? [closed]
...reak it up into smaller chunks and emulate those chunks individually. Then string the whole lot together for the finished product. Much like a set of black boxes with inputs and outputs, which lends itself beautifully to object oriented programming. You can further subdivide these chunks to make l...
Closure in Java 7 [closed]
... x.set(1);
}
}
public class ClosureTest {
public static void main(String[] args) {
// foo()
Closure foo = new Closure();
foo.apply();
// print('call to g(): ' + g()); // "1"
System.out.println("call to foo.g.apply(): " + foo.g.apply());
// pri...
Why is @autoreleasepool still needed with ARC?
...wly created objects from a method. E.g. consider this piece of code:
- (NSString *)messageOfTheDay {
return [[NSString alloc] initWithFormat:@"Hello %@!", self.username];
}
The string created in the method will have a retain count of one. Now who shall balance that retain count with a release...
What does the question mark operator mean in Ruby?
...:
"F"[0]
or in ruby 1.9:
"F".ord
Also notice that ?F will return the string "F", so in order to make the code shorter, you can also use ?F.ord in Ruby 1.9 to get the same result as "F".ord.
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Initialize parent's protected members with initialization list (C++)
...t along. Something like:
class Parent
{
protected:
Parent( const std::string& something ) : something( something )
{}
std::string something;
}
class Child : public Parent
{
private:
Child() : Parent("Hello, World!")
{
}
}
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