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PDO mysql: How to know if insert was successful
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No more like this, $value = $stmt->execute(); if($value){//true}else{//false}
– Ólafur Waage
Jun 3 '11 at 8:40
23
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Ternary operation in CoffeeScript
...everything is an expression, and thus results in a value, you can just use if/else.
a = if true then 5 else 10
a = if false then 5 else 10
You can see more about expression examples here.
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How do I prompt a user for confirmation in bash script? [duplicate]
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read -p "Are you sure? " -n 1 -r
echo # (optional) move to a new line
if [[ $REPLY =~ ^[Yy]$ ]]
then
# do dangerous stuff
fi
I incorporated levislevis85's suggestion (thanks!) and added the -n option to read to accept one character without the need to press Enter. You can use one or both o...
IsNothing versus Is Nothing
...for or against using IsNothing as opposed to Is Nothing (for example, If IsNothing(anObject) or If anObject Is Nothing... )? If so, why?
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gradle build fails on lint task
...nd Gradle Android Plugin 0.7. Yesterday I've added Jake Wharton's ButterKnife library in my gradle build script:
10 Answe...
Create a .txt file if doesn't exist, and if it does append a new line
I would like to create a .txt file and write to it, and if the file already exists I just want to append some more lines:
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Switch statement for greater-than/less-than
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1.0 time 37ms 73ms 68ms 184ms 73ms 21ms
if-immediate 1.0 1.0 1.0 2.6 1.0 1.0
if-indirect 1.2 1.8 3.3 3.8 2.6 1.0
switch-immediate 2.0 1.1 2.0 1.0 2.8 1.3
switch-range ...
How do I find out if the GPS of an Android device is enabled
...ger = (LocationManager) getSystemService( Context.LOCATION_SERVICE );
if ( !manager.isProviderEnabled( LocationManager.GPS_PROVIDER ) ) {
buildAlertMessageNoGps();
}
private void buildAlertMessageNoGps() {
final AlertDialog.Builder builder = new AlertDialog.Builder(this);
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What command means “do nothing” in a conditional in Bash?
... here, I want Bash to do nothing when $a is greater than "10", print "1" if $a is less than "5", otherwise, print "2":
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In Jinja2, how do you test if a variable is undefined?
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From the Jinja2 template designer documentation:
{% if variable is defined %}
value of variable: {{ variable }}
{% else %}
variable is not defined
{% endif %}
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