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How to disable / enable dialog negative positive buttons?
...on the dialog and if the text field is empty I would like to disable the positiveButton . I can get a charListener for the text field but I am not sure how I am going to set the positivebutton to disable or enable from that listener? What is the reference for the positive and negative buttons?
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Python subprocess.Popen “OSError: [Errno 12] Cannot allocate memory”
... that do not have this parent page tables etc. copy problem are vfork and posix_spawn. But if you do not feel like rewriting chunks of subprocess.Popen in terms of vfork/posix_spawn, consider using suprocess.Popen only once, at the beginning of your script (when Python's memory footprint is minimal...
Why is #!/usr/bin/env bash superior to #!/bin/bash?
...ual suggest using #!/bin/bash was wrong and bash functionality would be lost by doing so.
6 Answers
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Which, if any, C++ compilers do tail-recursion optimization?
..., 4.7 and 4.8 targeting various platforms) is enabled at levels -O2, -O3, -Os.
– FooF
Jan 10 '14 at 6:53
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What is SaaS, PaaS and IaaS? With examples
...eanstalk, Windows Azure, Heroku, Force.com, Google App Engine, Apache Stratos.
While in SaaS (Software as a Service) model you are provided with access to application software often referred to as "on-demand software". You don't have to worry about the installation, setup and running of the applicat...
Paste in insert mode?
Is it possible to paste in insert mode in Vim?
11 Answers
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Do threads have a distinct heap?
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@crisron It's possible to set up a separate heap for each thread, but if you do that rather than using the default shared heap, then it becomes difficult for e.g. thread A to allocate a buffer, fill it with data, pass it to thread B, and ha...
What is a semaphore?
...hared resources - you can use them that way, but it may cause hard to diagnose bugs.
While mutexes and semaphores have some similarities in their implementation, they should always be used differently.
The most common (but nonetheless incorrect) answer to the question posed at the top is that mutex...
Display open transactions in MySQL
...ml
4.5.1.6.3. Disabling mysql Auto-Reconnect
If the mysql client loses its connection to the server while sending a statement, it immediately and automatically tries to reconnect once to the server and send the statement again. However, even if mysql succeeds in reconnecting, your first con...
Differences between Oracle JDK and OpenJDK
...e Java specification passed the TCK (Java Technology Certification Kit).
Most of the vendors of JDK are written on top of OpenJDK by doing a few tweaks to [mostly to replace licensed proprietary parts / replace with more high-performance items that only work on specific OS] components without break...