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How to serialize a lambda?
...:
import java.io.Serializable;
public class Test {
static Object bar(String s) {
return "make serializable";
}
void m () {
SAM s1 = (SAM & Serializable) Test::bar;
SAM s2 = (SAM & Serializable) t -> "make serializable";
}
interface SAM {
...
Reference: Comparing PHP's print and echo
...
evaluates its single argument e and type-casts the resulting value to a string s. (Thus, print e is equivalent to print (string) e.)
Streams the string s to the output buffer (which eventually will be streamed to the standard output).
Evaluates to the integer 1.
Differences at the bytecode leve...
What are '$$' used for in PL/pgSQL
...actically anywhere in SQL scripts.
The body of a function happens to be a string literal which has to be enclosed in single quotes. Dollar-quoting is a PostgreSQL-specific substitute for single quotes to avoid quoting issues inside the function body. You could write your function definition with si...
How to check if a file exists from inside a batch file [duplicate]
...ng in batch programs.
IF [NOT] ERRORLEVEL number command
IF [NOT] string1==string2 command
IF [NOT] EXIST filename command
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How can I do test setup using the testing package in Go
...func TestAddition(t *testing.T) {
cases := []struct {
name string
a int
b int
expected int
}{
{"add", 2, 2, 4},
{"minus", 0, -2, -2},
{"zero", 0, 0, 0},
}
teardownTestCase := setupTestCase(t)
defer teardow...
How to find out if an installed Eclipse is 32 or 64 bit version?
...
If your installation is 64-bit the string x86_ (which identifies a 32-bit installation) will still match. You need to look for x86_64_
– Leo
Jan 21 '13 at 15:54
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How to concatenate two IEnumerable into a new IEnumerable?
...coalescing operator like so:
var together = (first ?? Enumerable.Empty<string>()).Concat(second ?? Enumerable.Empty<string>()); //amending `<string>` to the appropriate type
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What is the Java ?: operator called and what does it do?
...od COULD appear. So, for example, the following statements: VALID: String x = (false) ? "X" : "Y"; NOT VALID: (false) ? "X" : "Y";
– kenj0418
Nov 7 '13 at 19:47
4
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How do I add a ToolTip to a control?
...t sender, EventArgs e)
{
Control senderObject = sender as Control;
string hoveredControl = senderObject.Tag.ToString();
// only instantiate a tooltip if the control's tag contains data
if (hoveredControl != "")
{
ToolTip info = new ToolTip
{
Automatic...
sqlite database default time value 'now'
...sary.
Using unix epoch saves storage space - 4 bytes integer vs. 24 bytes string when stored as ISO8601 string, see datatypes. If 4 bytes is not enough that can be increased to 6 or 8 bytes.
Saving timestamp on UTC timezone makes it convenient to show a reasonable value on multiple timezones.
SQL...