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Increment a database field by 1
...t should do the trick.
UPDATE mytable
SET logins = logins + 1
WHERE id = 12
Insert new row, or Update if already present:
If you would like to update a previously existing row, or insert it if it doesn't already exist, you can use the REPLACE syntax or the INSERT...ON DUPLICATE KEY UPDATE ...
How do I convert a Java 8 IntStream to a List?
...e boxed method yet and it worked like a charm.
– twreid
Jan 5 '16 at 15:07
1
In Eclipse it is pos...
CSS hack大全 - 创意 - 清泛网 - 专注C/C++及内核技术
...ground-color:#f1ee18}}{} /* Safari(Chrome) 有效 */
@media all and (min-width: 0px){ .bb{background-color:#f1ee18;/*opera and Safari(Chrome) and firefox*/ background-color:#4cac70\0;}/* 仅 Opera 有效 */ }{}
.bb, x:-moz-any-link, x:default{background-color:#4eff00;/*IE7、Firefox3.5及以下...
Unfortunately MyApp has stopped. How can I solve this?
...f these is the NullPointerException.
How to solve it?
Every time an Android application crashes (or any Java application for that matter), a Stack trace is written to the console (in this case, logcat). This stack trace contains vital information for solving your problem.
Android Studio
In the...
Unique BooleanField value in Django?
...
Whenever I've needed to accomplish this task, what I've done is override the save method for the model and have it check if any other model has the flag already set (and turn it off).
class Character(models.Model):
name = models.CharField(max_length=255)
is_the_chosen_one = models.Boo...
Android: I am unable to have ViewPager WRAP_CONTENT
...
Overriding onMeasure of your ViewPager as follows will make it get the height of the biggest child it currently has.
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int height = 0;
for(i...
List of special characters for SQL LIKE clause
...
DECLARE @p0 VarChar(1000) = '%lkjwer--~_~~~[]%'
-- EndRegion
SELECT [t0].[ID], [t0].[Name]
FROM [RECORDS] AS [t0]
WHERE [t0].[Name] LIKE @p0 ESCAPE '~'
So I haven't tested it yet but it looks like potentially the ESCAPE '~' keyword may allow for automatic escaping of a string for use within a lik...
Unnamed/anonymous namespaces vs. static functions
...when declaring objects in a
namespace scope, the unnamed-namespace
provides a superior alternative.
Static only applies to names of objects, functions, and anonymous unions, not to type declarations.
Edit:
The decision to deprecate this use of the static keyword (affect visibility of a va...
How to use LINQ to select object with minimum or maximum property value
... edited Nov 24 '17 at 10:31
Sheridan
62.9k2121 gold badges123123 silver badges168168 bronze badges
answered May 27 '09 at 5:53
...
How to make a transparent HTML button?
... website and I thought of just using Photoshop to create backgrounds. I decided to do so only because in case I'd choose to change the button name easily by just editing the codes, I could just refer to the code. If I would construct buttons using Photoshop, I wouldn't be able to edit the Texts in t...