Question: Enter a certain date of the year, Judge this day is the first days of the year.
1. Procedural analysis: Take March 5 as an example, should first add up the first two months, and then add 5 days, that is, the first days of this year, special
Situation, leap year and enter the month is greater than 3 o'clock to
To get the first day of the specified date month, you can use the DateAdd function to subtract the number of days that have elapsed since the month of the specified date.
Copy Code code as follows:
CREATE FUNCTION [dbo]. [Udf_firstdayofmonth]
(
@Date Date
)
RETURNS DATETIME
As
BEGIN
Return CAST (DATEADD (Day,1-day (@Date), @Date) as DATETIME)
End
Alternatively, use Da
Look at the formula:int caculateweekday (int y,int m, int d) { if (m==1| | m==2) { m+=12; y--; } int iweek= (d+2*m+3* (m+1)/5+y+y/4-y/100+y/400)%7; This formula is called Kimlarsson formula. The formula is derived from the beginning of January 1, 00 A.D.Just look very complicated, I analyze each:Iweek= (d+2*m+3* (m+1)/5+y+y/4-y/100+y/400)%71.(D+2*m+3* (m+1)/5+y+y/4-y/100+y/400)%7D re
This article illustrates a C + + custom function that determines how many days of the year a certain month of the year is. Share to everyone for your reference, specific as follows:
* * Author: Liu Tongbin * Completion date: November 30, 2012 * Version number: v1.0 * Input Description: * Problem Description: Write function to determine the day of the year in a certain year
Sony PS VR device okay
Virtual Reality device PS VR for the price of 399 U.S. dollars, and officially sold in October this year, PS VR needs to be matched with PS4. PS VR uses a 5.7-inch OLED screen with a resolution of 1080P (Monocular 960x1080), the refresh rate supports 90Hz and 120Hz, the field angle
blurry, and it looks like the Windows98 system can barely run, and people on the iphone have seen the old Green desktop background, as well as the gray Desktop window.The brain hole is big open! IPhone 6 Plus running the WIN98 systemHowever, although the "Tall Man" gave a case, but for most of the Apple mobile phone users, the installation of WINDOWS98 system may not be suitable. Most of the above, the dis
These days, when HP acquired H3C, it was rare to see 3COM with 3 O-markers. But the problem, a year ago a project bought a 3COM switch 2924-SFP plus switch (PS: pure switch, no readable data). At that time saw a default management IP in the back, so log in to the Web interface configuration can be. Later the project bought H3C S5500 switch, do not have this switch, so idle.Due to the recent equipment
Town Field Poem:——— Dream who feel, the water month Build blog. Baiqian tribulation, only know the vicissitudes of the world.——— today holds the Buddhist language, the technology is boundless willing to learn. Willing to do what you learn, cast a conscience blog.——————————————————————————————————————————1 Base Code1 UseMaster2 Drop DatabaseHelloWorld3 4 5 --Create a database6 Create DatabaseHelloWorld7 8 9
Picture plus watermark software one: Photoshop
Photoshop, as the world's powerful image processing tool, do not say watermark, any image processing technology can be achieved.
Picture plus watermark software Two: Magic Hand of Light and shadow
Convenient text and watermark capabilities
The text watermark can be arbitrarily dragged. Horizontal, vertical row, glow, stroke, shadow, background and other e
Filter | Source: 5D Multimedia
This is an important image adjustment command related to photography.There is no one on the internet that can speak clearly or understand this order. Must be I have not found the reason, anyway I found none of you to explain, give a small example.To understand, I first thought of the PS CS from the help document. I use the Chinese v
Long-term photo restoration is also easy, so what about a picture of a facial feature? The special is in the character facial thin place quite trenchant situation, the skin is dry, blain Blain and so on the question at a glance! How can this "problem picture" be brought out to others to see! let alone flush it out!
Don't worry, underneath we take a picture for
Photo Name: Bring up the photo soft blue-Yellow-simple method,
1, open the original material, press CTRL + J to copy a layer of background layer, point channel panel, select Blue Channel, Image > Application image, layer for background, blending for multiply, opacity 50%, reverse-phase hook,
2, back to the layers panel, create curve adjustment layer, blue channel: 44,182, red channel: 89,108
3. Create a new layer, fill the black, layer blending mode
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