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Package objects
...initions get imported when someone outside of that package imports foo.bar._.
This way you can prevent to require the API client to issue additional imports to use your library effectively - e.g. in scala-swing you need to write
import swing._
import Swing._
to have all the goodness like onEDT a...
How to enumerate an enum with String type?
... at your own risk.
Here is the code:
func iterateEnum<T: Hashable>(_: T.Type) -> GeneratorOf<T> {
var cast: (Int -> T)!
switch sizeof(T) {
case 0: return GeneratorOf(GeneratorOfOne(unsafeBitCast((), T.self)))
case 1: cast = { unsafeBitCast(UInt8(truncating...
Split column at delimiter in data frame [duplicate]
...b','b|c','x|y'))
library(splitstackshape)
cSplit(df, "FOO", "|")
# ID FOO_1 FOO_2
# 1 11 a b
# 2 12 b c
# 3 13 x y
This particular function also handles splitting multiple columns, even if each column has a different delimiter:
df <- data.frame(ID=11:13,
...
What is the native keyword in Java for?
...in.c
#include <jni.h>
#include "Main.h"
JNIEXPORT jint JNICALL Java_Main_square(
JNIEnv *env, jobject obj, jint i) {
return i * i;
}
Compile and run:
sudo apt-get install build-essential openjdk-7-jdk
export JAVA_HOME='/usr/lib/jvm/java-7-openjdk-amd64'
javac Main.java
javah -jni Ma...
How can I escape square brackets in a LIKE clause?
...derscore from a query, so I ended up with this:
WHERE b.[name] not like '\_%' escape '\' -- use \ as the escape character
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Received an invalid column length from the bcp client for colid 6
...act 1 from it to get the value. After that it is used as the index of the _sortedColumnMappings ArrayList of the SqlBulkCopy instance not the index of the column mappings that were added to the SqlBulkCopy instance. One thing to note is that SqlBulkCopy will stop on the first error received so thi...
Switching between GCC and Clang/LLVM using CMake
...ridden by putting them into a system wide CMake file and pointing the CMAKE_USER_MAKE_RULES_OVERRIDE variable to it. Create a file ~/ClangOverrides.txt with the following contents:
SET (CMAKE_C_FLAGS_INIT "-Wall -std=c99")
SET (CMAKE_C_FLAGS_DEBUG_INIT "-g")
SET (CMAKE_C_FLA...
Django Admin - Disable the 'Add' action for a specific model
...
It is easy, just overload has_add_permission method in your Admin class like so:
class MyAdmin(admin.ModelAdmin):
def has_add_permission(self, request, obj=None):
return False
...
Debug vs Release in CMake
...Then from the root of your project:
mkdir Release
cd Release
cmake -DCMAKE_BUILD_TYPE=Release ..
make
And for Debug (again from the root of your project):
mkdir Debug
cd Debug
cmake -DCMAKE_BUILD_TYPE=Debug ..
make
Release / Debug will add the appropriate flags for your compiler. There are als...
Read each line of txt file to new array element
...sing, this should do what you're looking for
$lines = file($filename, FILE_IGNORE_NEW_LINES);
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