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Can I add a UNIQUE constraint to a PostgreSQL table, after it's already created?
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edited Aug 2 '17 at 10:42
a_horse_with_no_name
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How to percent-encode URL parameters in Python?
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407
Python 2
From the docs:
urllib.quote(string[, safe])
Replace special characters in strin...
Does it make any sense to use inline keyword with templates?
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/tmp/ccfWLeDX.o: In function `int g<int>(int)':
inlinexx2.cc:(.text+0x0): multiple definition of `int g<int>(int)'
/tmp/ccUa4K20.o:inlinexx.cc:(.text+0x0): first defined here
collect2: ld returned 1 exit status
Not stating inline when doing explicit instantiation may also lead to issu...
Unresolved external symbol on static class members
...ou can just use the inline specifier (see https://stackoverflow.com/a/11711082/55721)
If using older versions of the C++ standard, you must add the definitions to match your declarations of X and Y
unsigned char test::X;
unsigned char test::Y;
somewhere. You might want to also initialize a static...
What is digest authentication?
... sent. If they match then access is granted, otherwise it can send back a 401 Unauthorized (no login or failed login) or a 403 Forbidden (access denied).
Digest authentication is standardized in RFC2617. There's a nice overview of it on Wikipedia:
You can think of it like this:
Client makes req...
List tables in a PostgreSQL schema
...n use regular-expression notations such as character classes, for example [0-9] to match any digit. All regular expression special characters work as specified in Section 9.7.3, except for . which is taken as a separator as mentioned above, * which is translated to the regular-expression notation .*...
How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?
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answered Apr 4 '11 at 20:05
Sergi PapaseitSergi Papaseit
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What does the 'L' in front a string mean in C++?
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edited Jun 17 '11 at 10:11
answered Jun 17 '11 at 9:58
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How to get names of enum entries?
...og("enum member: ", enumMember);
}
Will print the following:
Enum member: 0
Enum member: 1
Enum member: bar
Enum member: foo
If you instead want only the member names, and not the values, you could do something like this:
for (var enumMember in myEnum) {
var isValueProperty = parseInt(enumMembe...
How do I make a dotted/dashed line in Android?
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Without java code:
drawable/dotted.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="line">
<stroke
android:color="#C7B299"
android:dashWidth="10px"
android:dashGap="10p...