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Concatenating Files And Insert New Line In Between Files
I have multiple files which I want to concat with cat .
Let's say
7 Answers
7
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Difference between SPI and API?
...va, 2nd Edition:
A service provider framework is a
system in which multiple service
providers implement a service, and the
system makes the implementations
available to its clients, decoupling
them from the implementations.
There are three essential components
of a service provi...
What is stdClass in PHP?
... dynamic properties, etc.
An easy way to consider the StdClass is as an alternative to associative array. See this example below that shows how json_decode() allows to get an StdClass instance or an associative array.
Also but not shown in this example, SoapClient::__soapCall returns an StdClass i...
Calling virtual functions inside constructors
...
class Base {
public:
Base() { f(); }
virtual void f() { std::cout << "Base" << std::endl; }
};
class Derived : public Base
{
public:
Derived() : Base() {}
virtual void f() { std::cout << "Derived" << std::endl; }
};
int main() {
Derived d;
}
// outputs: "Bas...
Finding the index of an item in a list
...Python features.
Throws if element not present in list
A call to index results in a ValueError if the item's not present.
>>> [1, 1].index(2)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ValueError: 2 is not in list
If the item might not be present i...
Support for “border-radius” in IE
...ebkit-border-radius: 15px;
border-radius: 15px;
}
IE9 will use the default border-radius, so just make sure you include that in all your styles calling a border radius. Then your site will be ready for IE9.
-moz-border-radius is for Firefox, -webkit-border-radius is for Safari and Chrome.
Furth...
Undo a Git merge that hasn't been pushed yet
...is direct case using:
git reset --hard ORIG_HEAD
might yield better results, as it should preserve your changes. ORIG_HEAD will point to a commit directly before merge has occurred, so you don't have to hunt for it yourself.
A further tip is to use the --merge switch instead of --hard since it...
How to make return key on iPhone make keyboard disappear?
... header file like this:
@interface YourViewController : UIViewController <UITextFieldDelegate>
Then in your .m file you need to implement the following UITextFieldDelegate protocol method:
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
r...
How to send an object from one Android Activity to another using Intents?
...at implements these two methods
public static final Parcelable.Creator<MyParcelable> CREATOR = new Parcelable.Creator<MyParcelable>() {
public MyParcelable createFromParcel(Parcel in) {
return new MyParcelable(in);
}
public MyParcelable[] newArray...
How do you find the disk size of a Postgres / PostgreSQL table and its indexes
...ze Functions. An example:
SELECT pg_size_pretty(pg_total_relation_size('"<schema>"."<table>"'));
For all tables, something along the lines of:
SELECT
table_schema || '.' || table_name AS table_full_name,
pg_size_pretty(pg_total_relation_size('"' || table_schema || '"."' || ta...