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python assert with and without parenthesis
...a convenient way to insert debugging assertions into a program:
assert_stmt ::= "assert" expression ["," expression]
The simple form, assert expression, is equivalent to
if __debug__:
if not expression: raise AssertionError
The extended form, assert expression1, expression2, is equi...
How do I convert a Vector of bytes (u8) to a string
...string slice (assuming a UTF-8 encoding):
use std::str;
//
// pub fn from_utf8(v: &[u8]) -> Result<&str, Utf8Error>
//
// Assuming buf: &[u8]
//
fn main() {
let buf = &[0x41u8, 0x41u8, 0x42u8];
let s = match str::from_utf8(buf) {
Ok(v) => v,
E...
How to create a zip archive of a directory in Python?
... for file in files:
ziph.write(os.path.join(root, file))
if __name__ == '__main__':
zipf = zipfile.ZipFile('Python.zip', 'w', zipfile.ZIP_DEFLATED)
zipdir('tmp/', zipf)
zipf.close()
Adapted from: http://www.devshed.com/c/a/Python/Python-UnZipped/
...
How to remove array element in mongodb?
...
Try the following query:
collection.update(
{ _id: id },
{ $pull: { 'contact.phone': { number: '+1786543589455' } } }
);
It will find document with the given _id and remove the phone +1786543589455 from its contact.phone array.
You can use $unset to unset the value ...
NASM x86汇编入门指南 - C/C++ - 清泛网 - 专注C/C++及内核技术
...编入门指南原文链接:http: docs.cs.up.ac.za programming asm derick_tut #helloworld内容1.介绍2.为什么写这篇文章3.NASM(The...NASM x86汇编入门指南
原文链接:http://docs.cs.up.ac.za/programming/asm/derick_tut/#helloworld
内容
1. 介绍
2. 为什么写这篇文...
Algorithm to detect overlapping periods [duplicate]
... throw new Exception("Invalid range edges.");
}
_Start = start;
_End = end;
}
#endregion
#region Properties
private DateTime _Start;
public DateTime Start {
get { return _Start; }
private set { _Start = value; }
}
priva...
Getting an empty JQuery object
...Consider:
<select id="select" name="select">
<option value="msg_1">Message 1</option>
<option value="msg_2">Message 1</option>
<option value="msg_3">Message 1</option>
</select>
<div class="msg_1 msg_3">
...
</div>
<div class=...
Unioning two tables with different number of columns
...in column orders. this example below produces an error:
create table test1_1790 (
col_a varchar2(30),
col_b number,
col_c date);
create table test2_1790 (
col_a varchar2(30),
col_c date,
col_b number);
select * from test1_1790
union all
select * from test2_1790;
ORA-01790: expression must have ...
Call Go functions from C
...ackage foo
// #include <somelib.h>
// extern int goProgressCB(uint64_t current, uint64_t total, void* userdata);
//
// static int goGetFiles(some_t* handle, void* userdata) {
// return somelib_get_files(handle, goProgressCB, userdata);
// }
import "C"
import "unsafe"
Note that the goGet...
Abstract classes in Swift Language
... init(){}
public func getFoodToEat()->String
{
if(self._iAmHungry())
{
return self._myFavoriteFood();
}else{
return "";
}
}
private func _myFavoriteFood()->String
{
return "Sandwich";
}
internal func...