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Checking for a null int value from a Java ResultSet
...hich case your test is completely redundant.
If you actually want to do something different if the field value is NULL, I suggest:
int iVal = 0;
ResultSet rs = magicallyAppearingStmt.executeQuery(query);
if (rs.next()) {
iVal = rs.getInt("ID_PARENT");
if (rs.wasNull()) {
// handle ...
How to write a bash script that takes optional input arguments?
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You could use the default-value syntax:
somecommand ${1:-foo}
The above will, as described in Bash Reference Manual - 3.5.3 Shell Parameter Expansion [emphasis mine]:
If parameter is unset or null, the expansion of word is substituted. Otherwise, the value of p...
vertical align middle in
...r Y Axis. It's pretty straight forward... All you need to do is set the elements position to absolute and later position 50% from the top and translate from it's axis with negative -50%
div {
height: 100px;
width: 100px;
background-color: tomato;
position: relative;
}
p {
position: absol...
The developers of this app have not set up this app properly for Facebook Login?
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@PratikshaRaikundaliya But the web page notify me that I do not have a valid contact email specified. How should I solve this problem?
– JackieLam
Feb 25 '14 at 3:24
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Order of event handler execution
...ey are executed in the order they are registered. However, this is an implementation detail, and I would not rely on this behavior staying the same in future versions, since it is not required by specifications.
share
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Split data frame string column into multiple columns
...that function, it returns nothing. What could be the problem. my type is something like "test...score"
– user3841581
Mar 14 '16 at 8:15
2
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How to output git log with the first line only?
...shown in one line. Each line should only show the first line of the commit message.
I found out that git log --pretty=short should do the trick but on my computer it shows the full log as git log does (besides the time stamp).
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Is it possible to disable the network in iOS Simulator?
I am trying to debug some inconsistent behaviour I am seeing in an application that gets its primary data from the internet. I don't see the issues in the simulator, just on the device, so I'd like to reproduce the network and connectivity environment in the simulator.
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java.io.Console support in Eclipse IDE
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I assume you want to be able to use step-through debugging from Eclipse. You can just run the classes externally by setting the built classes in the bin directories on the JRE classpath.
java -cp workspace\p1\bin;workspace\p2\bin ...
Set up a scheduled job?
...One solution that I have employed is to do this:
1) Create a custom management command, e.g.
python manage.py my_cool_command
2) Use cron (on Linux) or at (on Windows) to run my command at the required times.
This is a simple solution that doesn't require installing a heavy AMQP stack. However...