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Do I have to guard against SQL injection if I used a dropdown?
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You could do something as simple as the following example to make sure the posted size is what you expect.
$possibleOptions = array('All', 'Large', 'Medium', 'Small');
if(in_array($_POST['size'], $possibleOptions)) {
// Expected
} el...
curl_exec() always returns false
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Error checking and handling is the programmer's friend. Check the return values of the initializing and executing cURL functions. curl_error() and curl_errno() will contain further information in case of failure:
try {
$ch = curl_init();
// Check if initial...
What's the difference between nohup and ampersand
...be worth noting that just & does cause the subcommand to not receive some signals (e.g. SIGINT). nohup essentially adds SIGHUP to the list of signals that are not propagated.
– studgeek
May 22 at 21:38
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MySQL Creating tables with Foreign Keys giving errno: 150
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I had the same problem with ALTER TABLE ADD FOREIGN KEY.
After an hour, I found that these conditions must be satisfied to not get error 150:
The Parent table must exist before you define a foreign key to reference it. You must define...
How to adjust an UIButton's imageSize?
...ou're trying to do, you need to play with the buttons image edge inset. Something like:
myLikesButton.imageEdgeInsets = UIEdgeInsets(top, left, bottom, right)
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How does Access-Control-Allow-Origin header work?
Apparently, I have completely misunderstood its semantics. I thought of something like this:
16 Answers
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SQL - Rounding off to 2 decimal places
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Could you not cast your result as numeric(x,2)? Where x <= 38
select
round(630/60.0,2),
cast(round(630/60.0,2) as numeric(36,2))
Returns
10.500000 10.50
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Why can't stash be applied to the working directory?
... because it would be overwriting an existing file.
To fix, you could do something like deleting that file (it's okay, it's still in the repo), applying your stash, and then replacing the stashed version of the file with the in-repo version as appropriate.
Edit: It's also possible that the file has...
How do I put a bunch of uncommitted changes aside while working on something else
...a bunch of uncommitted changes and want to set it aside while working on something else instead, and then later (f.i. after several days) come back to it and proceed working. What would be the easiest workflow to accomplish this? (So far I have only experience with Mercurial's basic functionality). ...
How to count objects in PowerShell?
...urn objects instead of text. So for example, running get-alias returns me a number of System.Management.Automation.AliasInfo objects:
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