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select * vs select column
If I just need 2/3 columns and I query SELECT * instead of providing those columns in select query, is there any performance degradation regarding more/less I/O or memory?
...
How do I set/unset a cookie with jQuery?
...ent path to the current one:
var cookieValue = $.cookie("test", { path: '/foo' });
UPDATE (April 2015):
As stated in the comments below, the team that worked on the original plugin has removed the jQuery dependency in a new project (https://github.com/js-cookie/js-cookie) which has the same func...
Java List.contains(Object with field value equal to x)
...s, you can check to see if a Collection contains a MyObject with the name "foo" by like so:
MyObject object = new MyObject();
object.setName("foo");
collection.contains(object);
However, this might not be an option for you if:
You are using both the name and location to check for equality, but ...
Send string to stdin
Is there a way to effectively do this in bash:
6 Answers
6
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JavaScript OR (||) variable assignment explanation
...lsy, otherwise the value of the first operand is returned.
For example:
"foo" || "bar"; // returns "foo"
false || "bar"; // returns "bar"
Falsy values are those who coerce to false when used in boolean context, and they are 0, null, undefined, an empty string, NaN and of course false.
...
Input with display:block is not a block, why not?
...;![endif]-->
</head>
<body>
<form name="foo" action="#">
<div class="bb">div</div>
<input class="bb" size="20" name="bar" value="field">
</form>
</body>
</html>
This solution supports Inte...
How to delete or add column in SQLITE?
...---
0 john doe 20 170
1 foo bar 25 171
Now you want to remove the column height from this table.
Create another table called new_person
sqlite> CREATE TABLE new_person(
...> id INTEGER PRIMARY KEY,
...
How to keep environment variables when using sudo
...efully, and pay attention to the -E flag. This works:
$ export HTTP_PROXY=foof
$ sudo -E bash -c 'echo $HTTP_PROXY'
Here is the quote from the man page:
-E, --preserve-env
Indicates to the security policy that the user wishes to preserve their
existing environment varia...
Is it possible to create a multi-line string variable in a Makefile
... in the command part
[This does not work, see comment from MadScientist]
foo:
echo <<EOF
Here is a multiple line text
with embedded newlines.
EOF
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How are Anonymous inner classes used in Java?
...);
}
};
}
3.)Argument Defined Anonymous inner class:
interface Foo {
void methodFoo();
}
class B{
void do(Foo f) { }
}
class A{
void methodA() {
B b = new B();
b.do(new Foo() {
public void methodFoo() {
System.out.println("methodFoo");
}
...