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How to represent multiple conditions in a shell if statement?
...) ]
then echo abc
else echo efg
fi
I've enclosed the references to $g in double quotes; that's good practice, in general. Strictly, the parentheses aren't needed because the precedence of -a and -o makes it correct even without them.
Note that the -a and -o operators are part of the POSIX specif...
How to search for a part of a word with ElasticSearch
...in_gram and max_gram analyzer settings should be enough to narrow searches down to one record, and no more (a max_gram of 15 over a name is probably wasteful, since very few names share a substring that long).
– rthbound
Dec 18 '13 at 23:17
...
Create an empty data.frame
...Here's an other example with different column types :
df <- data.frame(Doubles=double(),
Ints=integer(),
Factors=factor(),
Logicals=logical(),
Characters=character(),
stringsAsFactors=FALSE)
str(df)
> str(df...
What is the point of interfaces in PHP?
...terfaces are a compromise. Most of the problems with multiple inheritance don't apply to abstract base classes, so most modern languages these days disable multiple inheritance yet call abstract base classes interfaces and allows a class to "implement" as many of those as they want.
...
Rounding up to next power of 2
... @MappaM This answer is still highly relevant and the best portable way to do it. Your 64-bit version has undefined behaviour if x > UINT32_MAX and isn't branchless. Also, GCC and Clang use -mtune=generic by default (as do most distros), so your code will NOT expand to the lzcnt instruction on ...
How to use multiple AWS Accounts from the command line?
...LE environment variable. When the default environment variable is set, you do not need to specify the profile on each command.
Linux, OS X Example:
$ export AWS_DEFAULT_PROFILE=account1
$ aws dynamodb list-tables
Windows Example:
$ set AWS_DEFAULT_PROFILE=account1
$ aws s3 ls
...
When to use self over $this?
...he scope resolution operator :: to refer to the current class; this can be done both in static and non-static contexts. Additionally, it's perfectly legal to use $this to call static methods (but not to reference fields).
– Artefacto
Aug 25 '10 at 9:04
...
Move capture in lambda
How do I capture by move (also known as rvalue reference) in a C++11 lambda?
6 Answers
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Same Navigation Drawer in different Activities
...android.com/training/implementing-navigation/nav-drawer.html
You can also download sample code from this tutorial, to see how you can do this.
Without fragments:
This is your BaseActivity Code:
public class BaseActivity extends Activity
{
public DrawerLayout drawerLayout;
public ListVi...
is vs typeof
...d line, if (obj.GetType() == typeof(ClassA)) {}, is faster, for those that don't want to read the article.
(Be aware that they don't do the same thing)
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