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Docker build “Could not resolve 'archive.ubuntu.com'” apt-get fails to install anything
...erver. If nslookup fails, public DNS servers like 8.8.8.8 might be blocked by your company (which I assume is for security reasons).
You'd think that adding your company's DNS servers to DOCKER_OPTS in /etc/default/docker should do the trick, but for whatever reason, it didn't work for me. I descri...
See line breaks and carriage returns in editor
...
VI shows newlines (LF character, code x0A) by showing the subsequent text on the next line.
Use the -b switch for binary mode. Eg vi -b filename or vim -b filename --.
It will then show CR characters (x0D), which are not normally used in Unix style files, as the cha...
Test for existence of nested JavaScript object key
...
You have to do it step by step if you don't want a TypeError because if one of the members is null or undefined, and you try to access a member, an exception will be thrown.
You can either simply catch the exception, or make a function to test the...
How do .gitignore exclusion rules actually work?
...n optional prefix ! which negates the pattern; any matching file excluded by a previous pattern will become included again.
i.e., the file has to have been excluded already to be included again. Hope that sheds some light.
...
Maven parent pom vs modules pom
...s, common plugins etc. (I'm assuming the parent but I've often been bitten by this and they've ended up in each project rather than a common one).
Honestly, I don't know how to not give a general answer here (like "use the level at which you think it makes sense to mutualize things"). And anywa...
Trust Anchor not found for Android SSL Connection
...r, and it will even tell you the solution:
"The certificate is not signed by a trusted authority (checking against Mozilla's root store). If you bought the certificate from a trusted authority, you probably just need to install one or more Intermediate certificates. Contact your certificate provide...
Is there a naming convention for MySQL?
...w up, i found this verry helpful for those who will come here later: launchbylunch.com/posts/2014/Feb/16/sql-naming-conventions/…
– Enissay
Feb 2 '16 at 14:59
1
...
Using “Object.create” instead of “new”
...Id(),
enumerable:true // writable:false, configurable(deletable):false by default
},
'name': {
value: 'Bob',
enumerable: true
}
});
As you can see, the properties can be initialized on the second argument of Object.create, with an object literal using a syntax similar to the used...
When to use DataContract and DataMember attributes?
...ic properties on your class, just like the XML serializer would.
HOWEVER: by not adding those attributes, you lose a lot of useful capabilities:
without [DataContract], you cannot define an XML namespace for your data to live in
without [DataMember], you cannot serialize non-public properties or ...
Why does Windows64 use a different calling convention from all other OSes on x86-64?
...er" encoding is not obvious; in terms of instruction encoding (the MOD R/M byte, see http://www.c-jump.com/CIS77/CPU/x86/X77_0060_mod_reg_r_m_byte.htm), register numbers 0...7 are - in that order - ?AX, ?CX, ?DX, ?BX, ?SP, ?BP, ?SI, ?DI.
Hence choosing A/C/D (regs 0..2) for return value and the firs...