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How can you programmatically tell an HTML SELECT to drop down (for example, due to mouseover)?
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this is a crying shame - mobile browsers provide an OS specific scrolling list, and I need that to pop up automatically.
– Michael
Sep 25 '17 at 1:22
ad...
Install a Python package into a different directory using pip?
...e a way to specify specific directory?
– Piotr Dobrogost
Jun 2 '12 at 22:04
1
@Piotr: yes there i...
Supabase 拓展：App 接入 Supabase 后端服务（Auth + PostgreSQL + Storage...
...端数据、文件上传下载和后端业务逻辑的 App。
Supabase 是一个开源的 Firebase 替代品，基于 PostgreSQL 构建。
适用场景
需要用户注册、登录、匿名登录、验证码登录
需要 PostgreSQL 表级增删改查
需要上传下...
NullPointerException in Java with no StackTrace
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You are probably using the HotSpot JVM (originally by Sun Microsystems, later bought by Oracle, part of the OpenJDK), which performs a lot of optimization. To get the stack traces back, you need to pass the option -XX:-OmitStackTraceInFastThrow to the JVM.
The optimization is that when...
Should URL be case sensitive?
...you are submitting. It is up to the server how to handle the request URL. Most of web servers are unix/linux and that means most of web servers are case sensitive.
– oᴉɹǝɥɔ
Apr 30 '13 at 16:37
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Garbage collector in Android
... then improves things, performance-wise. This is because it is not really possible to implement a "perfect" GC which will manage memory optimally in all cases. Such situations are hard to predict and depend on many subtle implementation details. The "good practice" is to let the GC run by itself; a ...
How can I measure the actual memory usage of an application or process?
...ou insights about the amount of memory used, and, more importantly, about possible memory leaks in your program. The heap profiler tool of Valgrind is called 'massif':
Massif is a heap profiler. It performs detailed heap profiling by taking regular snapshots of a program's heap. It produces a grap...
How to colorize diff on the command line?
... old new
Installation:
Ubuntu/Debian: sudo apt-get install colordiff
OS X: brew install colordiff or port install colordiff
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Problems with lib-icu dependency when installing Symfony 2.3.x via Composer
I've had no problems installing Symfony 2.2.x using Composer, I've always just copied the stable version at http://symfony.com/download .
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How to configure postgresql for the first time?
I have just installed postgresql and I specified password x during installation.
When I try to do createdb and specify any password I get the message:
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