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Autolayout - intrinsic size of UIButton does not include title insets
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This trick no longer works. Interface builder does no longer accept negative values in the Right field.
– Joris Mans
Dec 6 '15 at 10:38
7
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Bash Script : what does #!/bin/bash mean? [duplicate]
In bash script, what does #!/bin/bash at the 1st line mean ?
3 Answers
3
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MySQL: Insert record if not exists in table
... INTO table_listnames (name, address, tele)
SELECT * FROM (SELECT 'John', 'Doe', '022') AS tmp
WHERE NOT EXISTS (
SELECT name FROM table_listnames WHERE name = 'John'
) LIMIT 1;
Query OK, 1 row affected (0.00 sec)
Records: 1 Duplicates: 0 Warnings: 0
SELECT * FROM `table_listnames`;
+----+-...
What is the purpose of setting a key in data.table?
...e me to set a key (e.g. X[Y] ). As such, I wish to understand what a key does in order to properly set keys in my data tables.
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The property 'value' does not exist on value of type 'HTMLElement'
...fe. :) So the document.getElementById() returns the type HTMLElement which does not contain a value property. The subtype HTMLInputElement does however contain the value property.
So a solution is to cast the result of getElementById() to HTMLInputElement like this:
var inputValue = (<HTMLInput...
What does it mean by select 1 from table?
...an outside language, sometimes SELECT 1 FROM TABLE_NAME will be used. This does not offer significant benefit over selecting an individual column, but, depending on implementation, it may offer substantial gains over doing a SELECT *, simply because it is often the case that the more columns that th...
Stop LastPass filling out a form
... This should be the valid answer. LP seems to respect this attribute and does not require any crazy "search" names or ids or roles.
– Corneliu
Jul 28 '17 at 1:10
28
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How does TransactionScope roll back transactions?
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Essentially TransactionScope doesn't track your Adapter's, what it does is it tracks database connections. When you open a DB connection the connections will looks if there is an ambient transaction (Transaction Scope) and if so enlist with it. Caution i...
How does git store files?
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Git does include for each commit a full copy of all the files, except that, for the content already present in the Git repo, the snapshot will simply point to said content rather than duplicate it.
That also means that several fi...
Create a .txt file if doesn't exist, and if it does append a new line
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hint: If the file does not exist, this constructor creates a new file.
– Abou-Emish
Mar 6 '16 at 15:09
1
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