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Null vs. False vs. 0 in PHP
...ting means it also failed the filter?)
Methods returning false/null/string/etc interchangeably is a hack when the author care about the type of failure, for example, with filter_input() you can check for ===false or ===null if you care why the validation failed. But if you don't it might be a pitfal...
Python unittest - opposite of assertRaises?
...g., typo in test name (ttst_function), wrong run configuration in pycharm, etc.?
– Shay
Oct 19 '19 at 15:14
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Android Studio says “cannot resolve symbol” but project compiles
... all the Classes of SDK cannot resolved(included String, Integer, TextView etc.). before that, aStudio also told me she cannot find out the android-14 SDK which I used to compile my projects. I ignored that so the problems occurred. finally, I found this answer and follow, change the compile sdk ver...
Run certain code every n seconds [duplicate]
...time yields: starting... 16:07:42.017682 16:07:43.023215 16:07:44.023626 etc.
– eraoul
Dec 5 '16 at 0:10
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AppInventor2中的二进制数据以什么样的形式传递？字节列表、字节数组是什么...
1、byte[] 类型（字节数组）的字段：App Inventor 无法直接处理字节数组，但它们可以作为扩展之间的通用 Object 类型变量进行交换。
MQTT拓展中的字节数组的处理方式就是这种，直接转换成byte[]：
@SimpleFunction(description = "Publishe...
How do I get the full path to a Perl script that is executing?
...rking directory if the script is at or below the CWD
Additionally, cwd(), getcwd() and abs_path() are provided by the Cwd module and tell you where the script is being run from
The module FindBin provides the $Bin & $RealBin variables that usually are the path to the executing script; this modul...
psql: FATAL: Ident authentication failed for user “postgres”
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Edit the file /etc/postgresql/8.4/main/pg_hba.conf and replace ident or peer by either md5 or trust, depending on whether you want it to ask for a password on your own computer or not.
Then reload the configuration file with:
/etc/init.d/p...
“Inner exception” (with traceback) in Python?
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raise MyException(str(e)), ..., etc.
– Glenn Maynard
Aug 31 '09 at 2:52
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How do I get logs/details of ansible-playbook module executions?
...fg in the current directory where you ran ansible-playbook
~/.ansible.cfg
/etc/ansible/ansible.cfg
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Why declare a struct that only contains an array in C?
... (so it allows cleaner code - it won't make any difference in speed etc)
– John Carter
Aug 6 '11 at 11:51
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