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In a Bash script, how can I exit the entire script if a certain condition occurs?
... want to define your own set of status code with particular meaning. For example, 1 == tests failed, 2 == compilation failed. If the script is part of something else, you may need to adjust the codes to match the practices used there. For example, when part of test suite run by automake, the code 77...
cURL equivalent in Node.js?
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See the documentation for the HTTP module for a full example:
https://nodejs.org/api/http.html#http_http_request_options_callback
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nil detection in Go
...alize a pointer to it:
config := new(Config) // not nil
or
config := &Config{
host: "myhost.com",
port: 22,
} // not nil
or
var config *Config // nil
Then you'll be able to check if
if config == nil {
// then
}
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How to automatically select all text on focus in WPF TextBox?
...ect parent = e.OriginalSource as UIElement;
while (parent != null && !(parent is TextBox))
parent = VisualTreeHelper.GetParent(parent);
if (parent != null)
{
var textBox = (TextBox)parent;
if (!textBox.IsKeyboardFocusWithin)
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Sleeping in a batch file
... a Windows box, I've needed to pause its execution for several seconds (usually in a test/wait loop, waiting for a process to start). At the time, the best solution I could find uses ping (I kid you not) to achieve the desired effect. I've found a better write-up of it here , which describes a call...
How do I remove blank elements from an array?
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Or if you prefer more compact cities.reject!(&:empty?)
– aNoble
May 4 '11 at 4:55
54
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What is the (best) way to manage permissions for Docker shared volumes?
...olumes-from the data container, so the host uid/gid doesn't matter.
For example, one use case given in the documentation is backing up a data volume. To do this another container is used to do the backup via tar, and it too uses -volumes-from in order to mount the volume. So I think the key point t...
How do I get the APK of an installed app without root access?
I'm trying to extract the APK file of an installed Android app WITHOUT root permissions.
11 Answers
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Write a function that returns the longest palindrome in a given string
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The Algo 2 may not work for all string. Here is an example of such a string "ABCDEFCBA".
Not that the string has "ABC" and "CBA" as its substring. If you reverse the original string, it will be "ABCFEDCBA". and the longest matching substring is "ABC" which is not a palindrome....
How do I run a Java program from the command line on Windows?
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How would I create a batch file that compiles&runs the code, yet if it was compile before, just launch it?
– android developer
Mar 3 '16 at 23:45
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