function isEmpty(value) {
if (value === '') {
return false;
} else if (value === 0) {
return false;
} else if (value === null) {
return false;
} else if (value === undefined) {
return false;
} else {
return true;
}
return true;
}
javascript empty value check
class ExampleClass {
public void DoSomething()
{
if (this != null) {
//omitted
}
}
public void DoSomething2()
{
if (this != null) {
//omitted
}
}
}
Explanation: This can't be null in C# virtual instance methods - I was so confused by the widespread use of this check that I asked this question at SO: https://stackoverflow.com/questions/31747718/can-this-be-null-in-c-sharp-virtual-methods-what-happens-with-the-rest-of-ins
class Timer extends React.Component{
state ={
time: 10
};
setInvt = () =>{
let t = this.state.time
if(t<=1){
clearInterval(this.invertal)
}
this.setState({time: t-1})
}
componentDidMount(){
this.invertal = setInterval(this.setInvt, 1000)
}
render(){
return (<label>{this.state.time}</label>)
}
}
export {Timer}
sed -i 's/^#HTTPD=\/usr\/sbin\/httpd.worker/HTTPD=/\/usr\/sbin\/httpd.worker/g' /etc/sysconfig/httpd
double func_atof(char *p){
double integer = 0.0, div = 1.0 , fract = 0.0 , sign = 1.0;
if( *p == 45 ){sign = -1.0, *p++ ; }
while ( isdigit(*p) ) {
integer = ( *p++ ) + (10.0 * integer) - 48.0 ;
}
if(*p == 46 ){
(*p++ ) ;
while ( isdigit(*p) ) {
fract = ( *p++ ) + (10.0 * fract) - 48.0 ;
div *= 10;
}
}
return (integer + fract / div ) * sign ;
}
const configs = {
employeeObject: {
// tab 0
firstName: "",
middleName: "",
nickname: "",
lastName: "",
gender: "",
race: "",
title: "",
dob: "",
employeeIDNo: "",
// tab 1
userName: "",
permissionRole: 0,
employeeNo: "",
phoneExt: "",
startDate: "",
company: "",
division: "",
jobDescription: "",
businessUnit: "",
regionId: "",
participantStatus: "",
costCentre: "",
personType: "",
comments: "",
// tab 2
phone1: "",
phone2: "",
phone3: "",
address1: "",
address2: "",
address3: "",
address4: "",
postalCode: "",
email: "",
},
Why add another object with a title when you can just add a comment saying... well... nothing really...
typedef NS_ENUM(NSUInteger, MyEnum1) {
PackagesNo1 = 1,
PackagesNo2 = 2,
PackagesNo4 = 4,
PackagesNo8 = 8
};
typedef NS_ENUM(NSUInteger, MyEnum2) {
LEVEL0 = 0,
LEVEL1 = 1,
LEVEL2 = 2,
LEVEL3 = 3
};
- (int)packagesNeededForLevel:(int)level {
switch (level) {
case LEVEL0:
return PackagesNo8;
case LEVEL1:
return PackagesNo4;
case LEVEL2:
return PackagesNo2;
case LEVEL3:
return PackagesNo1;
}
}
well done mr junior
//////////////////////////////////////////
// Add ROI coordinates into Environment
//////////////////////////////////////////
AddROIcoordinatesIntoEnvironment();
It really helped me understand the code.
if(computedDate != null){
myObject.setDueDate(computedDate);
}
else{
myObject.setDueDate(null);
}
def possibilities():
alphabets=(n,o,r,t,h,e,a,s,u,w,m,y)
combinations=list()
for n in range(9,-1,-1):
for o in range(9,-1,-1):
for r in range(9,-1,-1):
for t in range(9,-1,-1):
for h in range(9,-1,-1):
for e in range(9,-1,-1):
for a in range(9,-1,-1):
for s in range(9,-1,-1):
for u in range(9,-1,-1):
for w in range(9,-1,-1):
for m in range(9,-1,-1):
for y in range(9,-1,-1):
if len(set([n,o,r,t,h,e,a,s,u,w,m,y]))==12:
north=10000*n + 1000*o +100*r +10*t +h
east=1000*e +100*a +10*s +t
south=10000*s + 1000*o +100*u +10*t +h
west=1000*w + 100*e +10*s +t
earth= 10000*e + 1000*a + 100*r +10*t +h
if north +east +south +west == earth:
combinations.append((north,east,south,west,earth))
return combinations
public static class time
{
public const int minutes_per_hour = 60;
public const int seconds_per_minute = 60;
public const int hours_per_day = 24;
public const int minutes_per_day = minutes_per_hour * hours_per_day;
public const int seconds_per_day = seconds_per_minute * minutes_per_day;
public const int days_per_year = 365;
}
FOR x IN ( SELECT COUNT(*) cnt
FROM DUAL
WHERE EXISTS ( SELECT NULL FROM task
WHERE task.task_type_id = lib.task_type_check()
AND task.task_status_id = lib.task_status_open()
AND task.unit_id = in_unit_id
AND task.station_id = v_station_id
)
)
LOOP
IF( x.cnt = 1 ) THEN
v_task_exist := TRUE;
ELSE
v_task_exist := FALSE;
END IF;
END LOOP;
precision mediump float;
uniform float time;
uniform vec2 resolution;
#define equals =
#define divided /
#define plus +
#define minus -
#define times *
#define by
#define point .
#define zero 0.
#define one 1.
#define five 5.
#define output gl_FragColor
#define then {
#define end }
#define less <
#define than
#define increment ++
#define afterwards ;
#define comma ,
#define semi .5
#define hundred 100.
void main ( void ) then
vec2 uv equals gl_FragCoord point xy divided by resolution point xy afterwards
float number equals sin( time plus uv point y ) afterwards
for ( float i equals zero afterwards i less than five afterwards increment i) then
number equals mod ( uv point x comma number ) afterwards
end
output equals vec4 (uv point x comma uv point y comma number times hundred comma one ) afterwards
end
private static final double RESULT_OF_DIVISION_BY_0 = 9.99;
public static double getPercentageDifference(long currentResult, long previousResult) {
if (previousResult == 0 && currentResult == 0) {
return 0;
} else if (previousResult == 0) {
return RESULT_OF_DIVISION_BY_0;
} else {
return (currentResult - previousResult) * 1.0 / previousResult;
}
}
case ClientMessage:
if (*XGetAtomName(GLWin.dpy, event.xclient.message_type)
== *"WM_PROTOCOLS")
{ printf("Exiting sanely...\n");
done = True;
}
break;
someone just want to watch the world burn